6661

This number is a prime.

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The sum of cube of factorial of digits of the smallest beastly prime (6!^3 + 6!^3 + 6!^3 + 1!^3) yields an emirp. [Bajpai]

Submitted: 2013-05-13 11:56:29; Last Modified: 2020-01-11 21:22:37.