6247

This number is a prime.

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The smallest prime which is sum of composite numbers written with the first primes repeated twice for each term, i.e., 6247 = 22 + 33 + 55 + 77 + 1111 + 1313 + 1717 + 1919. [Capelle]

Submitted: 2003-07-13 09:48:59; Last Modified: 2008-01-30 17:28:00.