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Mathematics, 19.02.2020 21:28 ericadawn2852

Wilson’s theorem says that a number N is prime if and only if (N − 1)! ≡ −1 (mod N). (a) If p is prime, then every number 1 ≤ x < p is invertible (has an inverse) modulo p. Which of these numbers are their own inverse?

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Wilson’s theorem says that a number N is prime if and only if (N − 1)! ≡ −1 (mod N). (a) If p is pri...
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