This proof is giving me some trouble: If p and p are distinct primes, prove that p^(q-1) + q^(p-1) is congruent to 1 modulo pq. Any help is appreciated, thank you.
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Hello, Follow everything here : http://www.mathhelpforum.com/math-he...-1-mod-ab.html (note that phi(p)=p-1 if p is prime)
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