65704

This number is a composite.

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The smallest number such that (n - 3, n - 5, n - 17, n - 257, n - 65537) are all primes. Note that 3, 5, 17, 257 and 65537 are the known Fermat primes. [Russo]

Submitted: 2001-08-20 07:46:54; Last Modified: 2008-01-30 17:28:00.