904117

This number is a prime.

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904117 = 9!2^2 + 0!2^2 + 4!2^2 + 1!2^2 + 1!2^2 + 7!2^2. Note that 904117 is the only prime number with this property. [Firoozbakht]

Submitted: 2004-08-25 09:03:13;   Last Modified: 2008-01-30 11:28:00.
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