62528561

This number is a prime.

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Concatenating the 4th powers of the first two primes of the form 4n+1 (i.e., 5^4 and 13^4) is a prime of the form 4n+1. [Post]

Submitted: 2004-10-08 20:58:18; Last Modified: 2008-01-30 17:28:00.