4 Jun
2011
4 Jun
'11
6:52 p.m.
My favorite primes are 91, 2 (the Odd prime) and 8 (largest even prime). I'm also a big fan of the Fermat Half-Primes: 4,6,15,91,703,1891,2701,... Citations: [91 and 2]: http://fortunes.cat-v.org/openbsd/ (search for "The Odd Prime") [8]: http://xkcd.com/899/ [Fermat Half-Prime]: n such that 2|a|=|b|, for a in 1<a<n, a^(n-1)%n == 1, and 0<b<n relatively prime to n.