647
This number is a prime.
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The only prime of form p^(p+1)+q^(q+1)-1, where p, q are
consecutive primes, i.e., 2^3*3^4-1. [Loungrides]
Submitted: 2016-03-17 06:33:04; Last Modified: 2018-12-23 01:30:44.
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