139149151157

This number is a prime.

13 9149151157

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The smallest 12-digit prime formed by the concatenation of four successive primes (139, 149, 151, 157). Note its mirror (751151941931) and backward order (157151149139) are also prime. [Mortreuil]

Submitted: 2004-06-14 08:15:26; Last Modified: 2008-01-30 17:28:00.