313

This number is a prime.

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The smallest prime number that is a substring of the concatenation, in either order, of the next two primes (331 and 317). The next four such primes are 111091, 777781, 1131113, and 3333313. [Gaydos]

Submitted: 2020-05-29 08:24:01;   Last Modified: 2020-05-29 12:22:55.
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