I'm trying to prove that any prime number bigger than 3 is congruent to 1 or 5 modulo 6. I started out by saying that that is the same as saying all prime numbers bigger than 3 are in the form 6n +- 1, n is an integer since 1 or 5 mod 6 yields either 1 or -1 and if you divide 6n+-1 by 6, you also get 1 or -1. But not i have no idea how to continue. any help will be appreciated. thank you(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums - The Fusion of Science and Community**

# Proof: any prime number greater than 3 is congruent to 1 or 5 mod 6

Have something to add?

- Similar discussions for: Proof: any prime number greater than 3 is congruent to 1 or 5 mod 6

Loading...

**Physics Forums - The Fusion of Science and Community**