6521
This number is a prime.
Single Curio View: (Seek other curios for this number)
π(6521) = 6! + 5! + 2! + 1!. There is only one other prime number with this property. [Honaker]
Submitted: 1999-09-22 04:47:01; Last Modified: 2008-08-01 00:30:23.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell