Posted by Adam on Monday, July 30, 2012 at 1:01pm.
If W(p)is congruent to 0(mod p), then p is a Wilson Prime. Show that 5 and 13 are Wilson Primes.

math  Steve, Monday, July 30, 2012 at 2:24pm
I think you mean that if
W(p) = (p1)!+1 = 0 mod p^2 then p is a Wilson Prime.
Just plug in p=5,13 and crank it out.