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The smallest prime p such that the numbers 21 + 31 + 51 + 71 + 111 + ... + p1, 22 + 32 + 52 + 72 + 112 + ... + p2, 23 + 33 + 53 + 73 + 113 + ... + p3, 24 + 34 + 54 + 74 + 114 + ... + p4 are prime. [Crespi de Valldaura]

 

  Submitted: 2000-07-13 15:10:19;   Last Modified: 2008-01-30 11:28:00.



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