2111

This number is a prime.

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2111 is the smallest start of a run of five primes obtained by the following procedure: replace each digit of 2111 with the digit's square to obtain a new prime, and up to five primes doing this recursively, i.e., 2111, 4111, 16111, 136111 and 1936111. [Rivera]

Submitted: 2020-06-10 12:38:59;   Last Modified: 2020-06-10 13:05:11.
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