1049

This number is a prime.

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The smallest member of the first triplet composed of three successive primes (1049, 1051, and 1061) that is never prime in any smaller base b, 2 ≤ b < 10, when expansions are interpreted as decimal numbers. [De Geest]

Submitted: 2003-12-14 23:29:15; Last Modified: 2008-09-03 17:19:09.