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The sum of the first 14 primes, the first 14 composites and the first 14 non-composites are each prime. (The sums are respectively: 281, 199 and 239). These sums are also simultaneously prime for the first 208, 214, 1148, 2460, 5558, 9922, 10658, 16738, 18886, 21734, 29370 and 30850 terms. [Caldwell]

 

  Submitted: 2001-08-01 10:58:36;   Last Modified: 2008-01-30 11:28:00.



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