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8 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) (  (0)! + (1)! + ... + (k)!) is prime only for k = 1,2,..,8 (composite for k>8). [Firoozbakht]
Submitted: 2004-08-17 04:40:39; Last Modified: 2008-01-30 11:28:00.
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