809

This number is a prime.

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Largest known prime p such that T(p) is prime in Juricevic conjecture on classification of Lehmer triples. Juricevic conjectured an infinite number of such primes. Yu Tsumura proved that T(p) is infinitely often composite. [Post]

Submitted: 2010-04-09 15:03:36; Last Modified: 2010-04-11 17:59:57.