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19 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) For k = 1, 2, 3, ... 19 at least one of the integers of the form 6k + 1 or 6k - 1 is prime. [Crespi de Valldaura]
Submitted: 1999-09-02 18:40:00; Last Modified: 2008-01-30 11:28:00.
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