This number is a prime.

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The first number n for which 15n-4, 15n-2, 15n+2 and 15n+4 are all composite, but 15n-14, 15n-8, 15n+8 and 15n+14 are all prime.

Submitted: 2004-06-27 18:05:32;   Last Modified: 2008-01-30 11:28:00.
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