QUOTE(Elnendil @ Nov 1 2010, 06:51 PM)

By the way Rai:
101 = 2!+99 or 3!+95 or 4!+77 or 5!-19. In all of the positive cases, p is composite.
Anyways, he made some minor comments and made some points concerning mod notation with it. I said i'd bring more information next time.
cooool
Write a program (calculator works) to compute all the primes that can't be written as a factorial + a positive prime.