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If W(p)is congruent to 0(mod p), then p is a Wilson Prime. Show that 5 and 13 are Wilson Primes.

  • math -

    I think you mean that if
    W(p) = (p-1)!+1 = 0 mod p^2 then p is a Wilson Prime.

    Just plug in p=5,13 and crank it out.

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