61

This number is a prime.

Single Curio View: (Seek other curios for this number)

61! - 60! + 59! - 58! + ... + 5! - 4! + 3! - 2! + 1! is prime.

Submitted: 2002-05-12 09:20:09; Last Modified: 2008-07-31 12:29:39.

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