79

This number is a prime.

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79 is a generalized Sophie-Germain prime. That's to say that 79 and 4*79+1 is also prime! Not only that but the emirp of 79 is also prime for (p, 4p+1)! Funnily enough, if we multiply and add 79's digits: 7*9+7+9, we also get 79 as well! [Anitha]

Submitted: 2023-05-31 04:22:51; Last Modified: 2025-03-26 11:40:18.