Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

#26 2013-01-14 07:47:24

noelevans
Full Member

Offline

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.
 

#27 2013-01-14 08:04:22

mathgogocart
Super Member

Offline

Re: post prime numbers!

9/bold-11.


Hey.
 

#28 2013-01-14 08:16:35

bobbym
Administrator

Online

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.
 

#29 2013-01-14 08:36:55

mathgogocart
Super Member

Offline

Re: post prime numbers!

Omg.


Hey.
 

#30 2013-04-19 18:16:08

mathaholic
Star Member

Offline

Re: post prime numbers!

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


246 pages on Prime Numbers Wiki (+1)
 

#31 2013-04-19 20:43:46

Agnishom
Real Member
Award: Wink Sherlock

Offline

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'
'Who are you to judge everything?' -Alokananda
 

#32 2013-04-20 11:07:19

mathaholic
Star Member

Offline

Re: post prime numbers!

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


246 pages on Prime Numbers Wiki (+1)
 

Board footer

Powered by FluxBB