Smarandache function

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English

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Smarandache function

Wikipedia

Etymology

Named after Florentin Smarandache, who rediscovered the function in 1980.

Proper noun

the Smarandache function

1. (number theory) A function, denoted by S(n) for some positive integer n, that yields the smallest number s such that n divides the factorial s!. For example, the number 8 does not divide 1!, 2!, 3!, but does divide 4!, so S(8) = 4.