Question: Suppose that m is a positive integer such that 6m + 1, 12m + 1 and 18m + 1 are all primes. Let n =

Suppose that m is a positive integer such that 6m + 1, 12m + 1 and 18m + 1 are all primes. Let n = (6m + 1)(12m + 1)(18m + 1). Prove that n is a Carmichael number.

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