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#26 2013-01-13 08:47:24

noelevans
Member
Registered: 2012-07-20
Posts: 236

Re: post prime numbers!

1234567891 and 123456791  easy to remember primes for testing some things in number theory.
Also  31, 331, 3331, 33331, 333331, 3333331, 33333331 are all prime.


Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.

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#27 2013-01-13 09:04:22

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: post prime numbers!

9/bold-11.


Hey.

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#28 2013-01-13 09:16:35

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,363

Re: post prime numbers!

The fourth repunit prime is huge

And no one knows how many of them there are!


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#29 2013-01-13 09:36:55

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: post prime numbers!

Omg.


Hey.

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#30 2013-04-18 20:16:08

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: post prime numbers!

13 - The unlucky number
That's why there is a Friday the 13th!


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#31 2013-04-18 22:43:46

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 15,832
Website

Re: post prime numbers!

3691 the only primenumber I have noticed till now in a car's number plate


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#32 2013-04-19 13:07:19

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: post prime numbers!

7 - the luckiest number
That's why there's Lucky seven.


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#33 2014-06-03 17:17:59

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: post prime numbers!

2^57,885,161-1


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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