6521

This number is a prime.

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π(6521) = 6! + 5! + 2! + 1!. There is only one other prime number with this property. [Honaker]

Submitted: 1999-09-21 23:47:01;   Last Modified: 2008-07-31 19:30:23.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell