22222223333355757

This number is a prime.

2222222 3333355757

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The smallest prime containing only the prime-digits (2, 3, 5, 7) repeated 7, 5, 3, 2 times, respectively. [Green]

Submitted: 2010-03-28 05:10:02; Last Modified: 2010-03-30 01:26:40.