5

This number is a prime.

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The smaller in a set of twin primes whose product is the concatenation of two successive primes, i.e., 5*7 = 3~5. Is there another set of twin primes with this property? See PC89107...70827 (36-digits) for a near hit! [Honaker]

Submitted: 2021-01-08 22:49:42; Last Modified: 2021-01-08 23:01:09.