Pépin's test - Wikipedia, the free encyclopedia
Wikipedia for the win!
(I feel too tired right now to do anything useful)
In class today, the prof explained Pepin's test, but I got lost midway. This is what I have so far:
Let , then Call this number .
If (1), then . Because of (1), 2q is the order. What I don't understand is how this shows that is prime. I also don't get how .
Any help is much appreciated.