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 21:29:16; Last Modified: 2018-04-15 22:06:05.
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