1. ## Prime Number 301

Can someone show me how to determine whether 301 is a prime. I know its not but I need to prove it.

2. Originally Posted by helpinmath
Can someone show me how to determine whether 301 is a prime. I know its not but I need to prove it.
if you know it is not, then give its prime factors..

3. I have to use something like (p - 1)! = -1 (mod p)

4. Here is the proof: $301=(7)(43)$.