2917

This number is a prime.

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The smallest of three primes formed by concatenating two consecutive double-digit Pythagorean primes, i.e., primes of form 4n+1. The other two are 4153 and 6173. [Loungrides]

Submitted: 2011-02-03 17:06:28; Last Modified: 2018-05-25 19:51:24.