Geeksforgeeks · Technology · 2026-08-16
Carmichael Numbers
A positive integer n is called a Carmichael number if, for every integer b such that 1 ≤ b < n and gcd(b, n) = 1, the following condition holds: bn-1 mod n = 1.Given a positive integer n, determine whether it is a Carmichael number.Examples :Input: n = 8Output: falseExplanation: 3 is relatively prime to
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