23573527

This number is a prime.

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A prime-digit prime concatenated from the smallest 4-digit prime-digit prime and the smallest 4-digit prime-digit emirp each consisting of all the distinct prime digits, i.e., 2357 and 3527. [Loungrides]

Submitted: 2022-02-07 05:59:40; Last Modified: 2022-02-07 11:48:40.