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641 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) In 1732, Euler found that 2^2^5 + 1, the first composite Fermat number, is divisible by 641.
Submitted: 1999-09-22 20:12:53; Last Modified: 2008-07-31 13:06:25.
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