43

This number is a prime.

Just showing those entries submitted by 'Herault': (Click here to show all)

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]