43

This number is a prime.

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The smallest prime (emirp) with additional digit "a" in representation for decimal 10 in base 11 number system. E.g., prime(2 * 7) = 3 * 11 + 2 * 5 = (3a)11. Note the first six primes. [Herault]

Submitted: 2009-09-06 11:09:41; Last Modified: 2009-09-06 15:54:39.