131

This number is a prime.

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The least integer such that the sum of its digits in every base B = 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 is prime. [Crespi de Valldaura]

Submitted: 1999-09-02 23:40:00; Last Modified: 2008-01-30 17:28:00.