107

This number is a prime.

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If A_n = 1!+3!+5!+...+(2n-1)!, then 107 divides A_53 and so 107 divides all A_n for n>=53. [Marot]

Submitted: 2009-05-20 12:06:49; Last Modified: 2009-05-20 16:36:38.