977923

This number is a prime.

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The largest of five primes, concatenated from the same three double-digit primes, 23, 79, 97. Note that it is also an emirp. The other four primes are, 237997, 239779, 792397, 799723. [Loungrides]

Submitted: 2020-02-15 16:44:54; Last Modified: 2020-02-15 18:25:43.