237997

This number is a prime.

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The smallest of five primes concatenated from the same three double-digit primes, 23, 79, 97. The other four are, 239779, 792397, 799723, 977923. [Loungrides]

Submitted: 2020-02-14 16:44:40; Last Modified: 2020-02-14 16:50:13.