91019

This number is a prime.

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The smallest palindromic prime of form PSn formed by concatenating in order the product P of the digits of a double-digit prime n, the sum S of the digits and the number n, case, (n=19), i.e., P=9, S=10. [Loungrides]

Submitted: 2021-01-25 11:19:18; Last Modified: 2021-01-25 12:35:30.