1242421

This number is a prime.

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A palindromic prime in which ((1+2+4+2+4+2+1)! - 1242421) and ((1+2+4+2+4+2+1)! + 1242421) are primes. [Sariyar]

Submitted: 2018-04-15 16:29:16;   Last Modified: 2018-04-15 17:06:05.
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