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Omni-MATH / For positive integers a and b such that a is coprime to b, define ord_(b)(a) as the least positive integer k such that b∣a^(k)−1, and define φ(a) to be the number of positive integ… · Discussion

Discussing For positive integers a and b such that a is coprime to b, define ord_(b)(a) as the least positive integer k such that b∣a^(k)−1, and define φ(a) to be the number of positive integ… · Omni-MATH

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