10011...10011 (26-digits)

This number is a composite.

100111 1001101111 0110110011

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The smallest number that is prime for bases 2, 3, 4, 5, 6, 7, 8 and 9. [FitzHugh and Alpern]

Submitted: 2006-05-23 17:58:19; Last Modified: 2008-01-30 17:28:00.