5273

This number is a prime.

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The only distinct-digit prime-digit prime that, repeating each of its digits d, (d+1) times, creates another prime-digit prime, i.e., 555555222777777773333. [Loungrides]

Submitted: 2017-09-19 04:00:59;   Last Modified: 2020-12-21 02:11:30.
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