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Maths and magic

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By *uke_silver OP   Man  over a year ago

London

I was bored yesterday evening and had the idea of making an actually fun maths thread (my idea of fun at least!)

So, here goes, include your favourite whole number in a comment and I'll (actually not me) reply to it with some cool maths fact about that number.

The magic part is that it's (barely ) sufficiently advanced technology. I should name it something - let's go with _uke_silver's saxophone. I'm hoping it's been tuned correctly lol, otherwise this is going to be a grand failure.

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By *inky_couple2020Couple  over a year ago

North West

17

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By *mf123Man  over a year ago

with one foot out the door

55

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By *uke_silver OP   Man  over a year ago

London


"17"
17 is the least random number, according to the Hackers' Jargon File.

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By *uke_silver OP   Man  over a year ago

London


"55"
55 is the interesting property that it is the 10th Fibonacci number and the sum of the numbers 1 to 10.

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By *inkyropecoupleCouple  over a year ago

carluke

The suspense is killing me

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By *uke_silver OP   Man  over a year ago

London

Woo!

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By *inkyropecoupleCouple  over a year ago

carluke

7

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By *uke_silver OP   Man  over a year ago

London


"7"
7 is the sum of any two opposite sides on a standard six-sided die.

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By *eeliciouschaosWoman  over a year ago

Wherever

41 hours please

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By *uke_silver OP   Man  over a year ago

London


"41 hours please"
41 is the sum of two squares, 42 + 52.

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By *rsMistyPeaksWoman  over a year ago

Essex

Why has no one said 69

Oops

Just did

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By *uke_silver OP   Man  over a year ago

London


"Why has no one said 69

Oops

Just did"

69 is a value of n where n^{2} and n^{3} together contain each digit once.

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By (user no longer on site)  over a year ago

77

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By *icecouple561Couple  over a year ago
Forum Mod

East Sussex

[Removed by poster at 19/10/23 22:16:00]

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By *eeliciouschaosWoman  over a year ago

Wherever


"41 hours please

41 is the sum of two squares, 42 + 52."

How?

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By *uke_silver OP   Man  over a year ago

London


"77"
77 is the number of digits of the 12th perfect number.

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By *uke_silver OP   Man  over a year ago

London


"[Removed by poster at 19/10/23 22:16:00]"
19 is the maximum number of 4^{th} powers needed to sum to any number.

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By *uke_silver OP   Man  over a year ago

London


"41 hours please

41 is the sum of two squares, 42 + 52.

How? "

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

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By *obilebottomMan  over a year ago

All over

91

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By (user no longer on site)  over a year ago

6174

Enjoy

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By *uke_silver OP   Man  over a year ago

London


"[Removed by poster at 19/10/23 22:16:00]

19 is the maximum number of 4^{th} powers needed to sum to any number."

Yeah, it takes the first number in your message, even if it's deleted.

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By *uke_silver OP   Man  over a year ago

London


"91"
91 is the smallest pseudoprime in base 3.

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By *uke_silver OP   Man  over a year ago

London


"6174

Enjoy"

6174 is the Kaprekar constant for 4-digit numbers.

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By *eeliciouschaosWoman  over a year ago

Wherever


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly"

Bloody fab

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By *obilebottomMan  over a year ago

All over


"91

91 is the smallest pseudoprime in base 3."

Like a fermat?

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By *uke_silver OP   Man  over a year ago

London


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab "

The saxophone is a pathway to many abilities some consider to be unnatural.

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By *ady IncognitoWoman  over a year ago

.

351

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By *uke_silver OP   Man  over a year ago

London


"91

91 is the smallest pseudoprime in base 3.

Like a fermat? "

Yes

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By *uke_silver OP   Man  over a year ago

London


"351"
351 is the smallest number so that it and the surrounding numbers are all products of 4 or more primes.

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By *obilebottomMan  over a year ago

All over


"91

91 is the smallest pseudoprime in base 3.

Like a fermat?

I don't know about anyone else but I love a fermat pseudoprime

Yes"

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By *elshcouple18Couple  over a year ago

Cardiff

Lucky for some, 13

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By *eeliciouschaosWoman  over a year ago

Wherever


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab

The saxophone is a pathway to many abilities some consider to be unnatural."

Stop it

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By *uke_silver OP   Man  over a year ago

London


"Lucky for some, 13"
13 is the number of Archimedian solids.

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By *obilebottomMan  over a year ago

All over

Anyone else worries this thread might baffle Sydney a little bit

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By *uke_silver OP   Man  over a year ago

London


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab

The saxophone is a pathway to many abilities some consider to be unnatural.

Stop it "

That's what the Jedi will tell you when you begin narrating the story of Darth Plagueis the Wise!

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By *uke_silver OP   Man  over a year ago

London


"6174

Enjoy

6174 is the Kaprekar constant for 4-digit numbers."

Did you know this or were you hoping to trip the saxophone up?

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By *uke_silver OP   Man  over a year ago

London


"Anyone else worries this thread might baffle Sydney a little bit "

I was accused of working for Sydney! This will show her I don't

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By *partharmonyCouple  over a year ago

Ruislip

671

That's definitely my favourite number.

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By *uke_silver OP   Man  over a year ago

London


"671

That's definitely my favourite number."

671 is a rhombic dodecahedral number.

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By *mber81Woman  over a year ago

Lives in Preston, Eng

This might be the hottest post I have read in the forums.

42 please.

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By *uke_silver OP   Man  over a year ago

London


"This might be the hottest post I have read in the forums.

42 please."

42 is conjectured to be the scaling factor in the leading order term of the "sixth moment of the Riemann zeta function".

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By *mber81Woman  over a year ago

Lives in Preston, Eng


"This might be the hottest post I have read in the forums.

42 please.

42 is conjectured to be the scaling factor in the leading order term of the "sixth moment of the Riemann zeta function"."

Oh god. I am so close. Ohhhh yeah baby riemann, zeta FUNCTION!!!! Ahhhhhh.

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By *uke_silver OP   Man  over a year ago

London


"This might be the hottest post I have read in the forums.

42 please. "

https://youtu.be/xSTN3mHEAOA

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By *eeliciouschaosWoman  over a year ago

Wherever


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab

The saxophone is a pathway to many abilities some consider to be unnatural.

Stop it

That's what the Jedi will tell you when you begin narrating the story of Darth Plagueis the Wise!"

Quite honestly happy it’s probably down to 40 hours right now.

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By *uke_silver OP   Man  over a year ago

London


"Quite honestly happy it’s probably down to 40 hours right now."
40 is the only number whose letters are in alphabetical order.

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By *uke_silver OP   Man  over a year ago

London


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab

The saxophone is a pathway to many abilities some consider to be unnatural.

Stop it

That's what the Jedi will tell you when you begin narrating the story of Darth Plagueis the Wise!

Quite honestly happy it’s probably down to 40 hours right now. "

New number, new fact

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By *eeliciouschaosWoman  over a year ago

Wherever


"41 hours please

41 is the sum of two squares, 42 + 52.

How?

I'm assuming it was supposed to be 4 squared + 5 squared but fab doesn't handle it correctly

Bloody fab

The saxophone is a pathway to many abilities some consider to be unnatural.

Stop it

That's what the Jedi will tell you when you begin narrating the story of Darth Plagueis the Wise!

Quite honestly happy it’s probably down to 40 hours right now.

New number, new fact "

Obviously!

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By *leanor1717Woman  over a year ago

Gillingham

23

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By *uke_silver OP   Man  over a year ago

London


"23"
23 is the smallest number of integer-sided boxes that tile a box so that no two boxes share a common length.

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By *leanor1717Woman  over a year ago

Gillingham

Not sure my head can get around all those boxes and tiles... thanks tho x

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By *uke_silver OP   Man  over a year ago

London


"Not sure my head can get around all those boxes and tiles... thanks tho x"

Here, a special manual one for you: 23 is the ninth prime number, the smallest odd prime that is not a twin prime.

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By *ellhungvweMan  over a year ago

Cheltenham

0

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By *uke_silver OP   Man  over a year ago

London


"0"
0 is the additive identity.

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By *leanor1717Woman  over a year ago

Gillingham


"Not sure my head can get around all those boxes and tiles... thanks tho x

Here, a special manual one for you: 23 is the ninth prime number, the smallest odd prime that is not a twin prime."

Aww thank you I can understand that one without doing brain gymnastics!

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By *uke_silver OP   Man  over a year ago

London


"Not sure my head can get around all those boxes and tiles... thanks tho x"

Okay, after going too deep down the squared square rabbit-hole, I realised that the actual lowest order simple perfect squared square is of order 21, not 23. Looks like the saxophone was wrong in this case!

https://youtu.be/NoRjwZomUK0

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By *uke_silver OP   Man  over a year ago

London

Thank you _ellhungvwe, _inkyropecouple, _inky_couple2020, _icecouple561, _mf123, _rsmistypeaks, _obilebottom, tale_of_two_titties, _partharmony, steveandhismagicpicklex, wells_play, _mber81, _eeliciouschaos, _elshcouple18, _leanor1717. QED :D

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By *ools and the brainCouple  over a year ago

couple, us we him her.

I suffer from dyscalculia I find maths impossible.

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By *thfloorCouple  over a year ago

Hove


"I suffer from dyscalculia I find maths impossible.

"

Just pick a number

What I'm thinking is duke's scripting foo could do wonders for fabadmin! Can it work in messages?

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By *uke_silver OP   Man  over a year ago

London


"I suffer from dyscalculia I find maths impossible.

"

I'm so sorry. Does it affect arithmetic only, or do you also not like doing geometry or algebra?

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By *uke_silver OP   Man  over a year ago

London


"I suffer from dyscalculia I find maths impossible.

Just pick a number

What I'm thinking is duke's scripting foo could do wonders for fabadmin! Can it work in messages?"

Of course it can! It has great power (and I wield it with great responsibility ).

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By *ools and the brainCouple  over a year ago

couple, us we him her.


"I suffer from dyscalculia I find maths impossible.

I'm so sorry. Does it affect arithmetic only, or do you also not like doing geometry or algebra?"

The only way I can describe it is like someone closing a pair of thick curtains in my mind when I try to do any math but as they are doing so the calculations are being rapidly jumbled up into a nonsensical mess.

Sorry for the thread hijacking.

I'll shut, up carry on.

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By *d4fun73Man  over a year ago

Shipley

60

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By *uke_silver OP   Man  over a year ago

London


"I suffer from dyscalculia I find maths impossible.

I'm so sorry. Does it affect arithmetic only, or do you also not like doing geometry or algebra?

The only way I can describe it is like someone closing a pair of thick curtains in my mind when I try to do any math but as they are doing so the calculations are being rapidly jumbled up into a nonsensical mess.

Sorry for the thread hijacking.

I'll shut, up carry on."

Thanks for the explanation. Also, I don't mind at all - thread hijacking as a meta concept is not something I'm bothered about - it's not 'my' thread lol, it's a public thread on the lounge forum.

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By *uke_silver OP   Man  over a year ago

London


"60"
60 is the sum of a pair of twin primes (29 + 31), as well as the sum of four consecutive primes (11 + 13 + 17 + 19).

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By *d4fun73Man  over a year ago

Shipley


"60

60 is the sum of a pair of twin primes (29 + 31), as well as the sum of four consecutive primes (11 + 13 + 17 + 19)."

It's also the base for all time and geometry measurement. Base 60 came from the 4th BC in mesopotamia

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By *uke_silver OP   Man  over a year ago

London


"It's also the base for all time and geometry measurement. Base 60 came from the 4th BC in mesopotamia"
60 is the smallest number divisible by 1 through 6.

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By *dam_TinaCouple  over a year ago

Hampshire


"Not sure my head can get around all those boxes and tiles... thanks tho x

Here, a special manual one for you: 23 is the ninth prime number, the smallest odd prime that is not a twin prime."

Are you sure it's not the 10th ?

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By *uke_silver OP   Man  over a year ago

London


"Are you sure it's not the 10th ?"
10 is a semi-meandric number.

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By *dam_TinaCouple  over a year ago

Hampshire


"Are you sure it's not the 10th ?

10 is a semi-meandric number."

Also I guess 1 isn't a prime number so ignore me

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By *uke_silver OP   Man  over a year ago

London


"Also I guess 1 isn't a prime number so ignore me"
1 is the first figurate number of every kind, such as triangular number, pentagonal number and centered hexagonal number, to name just a few.

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By *cottish guy 555Man  over a year ago

London


"Why has no one said 69

Oops

Just did

69 is a value of n where n^{2} and n^{3} together contain each digit once."

And also a lot of fun in certain situations

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By *inky_couple2020Couple  over a year ago

North West


"Not sure my head can get around all those boxes and tiles... thanks tho x

Here, a special manual one for you: 23 is the ninth prime number, the smallest odd prime that is not a twin prime."

23 is actually MY favourite number. 17, which we shared last night is Mr KC's and "ours". But I really do like 23.

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By *uke_silver OP   Man  over a year ago

London


". But I really do like 23."
23 is the first prime P for which unique factorization of cyclotomic integers based on the Pth root of unity breaks down.

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By *aucasian GhandiMan  over a year ago

from my dad's left nut (Warwick)

9876541298776551299876637489876.1

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By *uke_silver OP   Man  over a year ago

London


"9876541298776551299876637489876.1"
9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

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By *aucasian GhandiMan  over a year ago

from my dad's left nut (Warwick)


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!)."

OK new.number

-000.7654

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By *uke_silver OP   Man  over a year ago

London


"OK new.number

-000.7654"

0 is the additive identity.

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By *thfloorCouple  over a year ago

Hove


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

OK new.number

-000.7654"

Which part of "whole number" do you not you understand nice work

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By *aucasian GhandiMan  over a year ago

from my dad's left nut (Warwick)


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

OK new.number

-000.7654

Which part of "whole number" do you not you understand nice work "

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By *aucasian GhandiMan  over a year ago

from my dad's left nut (Warwick)


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

OK new.number

-000.7654

Which part of "whole number" do you not you understand nice work "

Let's take this shit really seriously shall we

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By *obilebottomMan  over a year ago

All over

999

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By *uke_silver OP   Man  over a year ago

London


"999"
999 is an uninteresting number.

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By *obilebottomMan  over a year ago

All over


"999

999 is an uninteresting number."

Not if you have an emergency

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By *aiseiMan  over a year ago

Birmingham


"This might be the hottest post I have read in the forums.

42 please.

42 is conjectured to be the scaling factor in the leading order term of the "sixth moment of the Riemann zeta function".

Oh god. I am so close. Ohhhh yeah baby riemann, zeta FUNCTION!!!! Ahhhhhh. "

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By *uke_silver OP   Man  over a year ago

London


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

OK new.number

-000.7654

Which part of "whole number" do you not you understand nice work

Let's take this shit really seriously shall we "

Hey, don't expose the air leaks in my saxophone!

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By *uke_silver OP   Man  over a year ago

London


"999

999 is an uninteresting number.

Not if you have an emergency "

This is numbers math fact thread, not a numbers fact thread lol.

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By *d4fun73Man  over a year ago

Shipley


"9876541298776551299876637489876.1

9.876541298776552e+30 is a number for which we're missing a fact (submit one to numbersapi at google mail!).

OK new.number

-000.7654

Which part of "whole number" do you not you understand nice work

Let's take this shit really seriously shall we

Hey, don't expose the air leaks in my saxophone! "

Oh you have a saxophone as well!

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By *aith SkynbyrdWoman  over a year ago

Somewhere else


"999

999 is an uninteresting number.

Not if you have an emergency

This is numbers math fact thread, not a numbers fact thread lol."

In that case… 911

Not my favourite number but 23 was already taken a few times over.

So yeah, 911

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By *uke_silver OP   Man  over a year ago

London


"In that case… 911

Not my favourite number but 23 was already taken a few times over.

So yeah, 911"

911 is the American emergency number.

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By *aith SkynbyrdWoman  over a year ago

Somewhere else


"In that case… 911

Not my favourite number but 23 was already taken a few times over.

So yeah, 911

911 is the American emergency number."

I know… I’m American… I chose it cause it’s the American 999. Do you know anything else about 911 ? Excluding a very specific date in history, also American.

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By *uke_silver OP   Man  over a year ago

London


"I know… I’m American… I chose it cause it’s the American 999. Do you know anything else about 911 ? Excluding a very specific date in history, also American."
999 is a boring number.

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By *uke_silver OP   Man  over a year ago

London


"999

999 is an uninteresting number.

Not if you have an emergency

This is numbers math fact thread, not a numbers fact thread lol.

In that case… 911

Not my favourite number but 23 was already taken a few times over.

So yeah, 911"

For your favourite number, I have to give you one: 23 is a Wedderburn–Etherington number.

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By *uke_silver OP   Man  over a year ago

London


"In that case… 911

Not my favourite number but 23 was already taken a few times over.

So yeah, 911

911 is the American emergency number.

I know… I’m American… I chose it cause it’s the American 999. Do you know anything else about 911 ? Excluding a very specific date in history, also American."

I'm sorry, I think my saxophone agrees with the fact that history began on July 4, 1776. Everything before that was a mistake. Math can't override freedom.

'Murica!

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By *uke_silver OP   Man  over a year ago

London

A manual intervention for the emergency numbers:

999 is a Kaprekar number.

911 is a Sophie Germain prime.

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