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641 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 2641 - 1 was the smallest Mersenne number that had not been completely factored prior to the 21st century. [Cerias]
Submitted: 1999-09-22 20:12:53; Last Modified: 2008-07-31 13:06:50.
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