3

This number is a prime.

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3 is the smallest prime such that if F(p) = 2*p^2-1, then F(3), F(F(3)), and F(F(F(3))) are all primes. [Opao]

Submitted: 2003-12-01 19:51:12;   Last Modified: 2008-01-30 11:28:00.
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