774023

This number is a prime.

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The smallest emirp p such that prime(p)*p-π(p) and prime(p)*p+π(p) yield two more emirps (9111644663389 and 9111644787457) respectively. The next number with this property is 75489719. [Bajpai]

Submitted: 2016-08-03 20:01:18; Last Modified: 2020-06-16 00:19:05.