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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: 1999-09-21 23:47:01; Last Modified: 2008-07-31 19:30:23.
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