769

This number is a prime.

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prime(769) = prime(7)*prime(6)*prime(9) + phi(769). The prime 769 is the only known number (up to 2*10^9) with this property. [Firoozbakht]

Submitted: 2009-05-11 11:25:59; Last Modified: 2009-05-11 16:36:27.