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257 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 257 is the fourth of the five known Fermat primes; the other four are 3, 5, 17, and 65537. Many mathematicians believe that no more Fermat primes exist. [Dobb]
Submitted: 2002-05-21 16:10:19; Last Modified: 2008-01-30 11:28:00.
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