25434523

This number is a prime.

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The smallest Yarborough prime concatenated from two 4-digit distinct-digit primes, i.e., 2543, 4523, each consisting of the same consecutive digits (2, 3, 4, 5). [Loungrides]

Submitted: 2019-12-09 10:39:26; Last Modified: 2020-07-04 15:57:00.