7532753275327532753

This number is a prime.

753275327 5327532753

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The only prime less than a googol formed by concatenating in descending order the prime digits 7, 5, 3, 2 repeating this procedure. [Loungrides]

Submitted: 2018-01-19 13:36:59; Last Modified: 2018-12-10 17:26:01.