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Single Curio View: (Seek other curios for this number) The largest natural number n for which all odd numbers k relatively prime to n, with 1 < k < n, are primes. It is also the largest for which 2np is prime for each prime p in [n, 2n2]. [Capelle]
Submitted: 20091012 04:42:01; Last Modified: 20091013 05:56:26.
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