Mathematics, 20.07.2019 00:30, davidoj13

If p is odd, show that 2^(p-1)(2^p - 1) = 1 +9p(p-1)/2 (mod 81)

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If p is odd, show that 2^(p-1)(2^p - 1) = 1 +9p(p-1)/2 (mod 81)...