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A217077
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Numbers n such that (n^41-1)/(n-1) is prime.
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6
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14, 53, 55, 58, 71, 76, 82, 211, 248, 271, 296, 316, 430, 433, 439, 472, 545, 553, 555, 596, 663, 677, 682, 746, 814, 832, 885, 926, 947, 959, 1048, 1121, 1146, 1175, 1207, 1300, 1302, 1390, 1404, 1445, 1466, 1541, 1650, 1699, 1702, 1706, 1756, 1757, 1782, 1902
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[2, 2000], PrimeQ[(#^41 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
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PROG
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(Magma) [n: n in [2..2000] |IsPrime((n^41 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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