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257 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) Using the primes up to 257 in a sieve of Eratosthenes on the set of integers leaves only 10% of numbers unfactored. [Rupinski]
Submitted: 2003-02-28 15:28:30; Last Modified: 2008-01-30 11:28:00.
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