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This number is a unit (so is neither prime nor composite).
Single Curio View: (Seek other curios for this number)The remainder of division of the Mersenne numbers 2p - 1 by p is always equal to 1. [Capelle]
Submitted: 2006-02-10 10:13:35; Last Modified: 2008-01-30 17:28:00.
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