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A139954
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Primes of the form 14x^2+14xy+31y^2.
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1
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31, 59, 199, 251, 311, 419, 619, 691, 719, 839, 859, 971, 1039, 1259, 1279, 1291, 1511, 1571, 1699, 1879, 1951, 2099, 2399, 2539, 2579, 2819, 2971, 3191, 3331, 3359, 3391, 3491, 3499, 3631, 3919, 4051, 4079, 4339, 4591, 4651, 4679, 4871
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OFFSET
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1,1
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COMMENTS
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Discriminant=-1540. See A139827 for more information.
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LINKS
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FORMULA
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The primes are congruent to {31, 59, 111, 159, 199, 251, 279, 311, 339, 411, 419, 531, 551, 559, 619, 691, 719, 731, 839, 859, 951, 971, 999, 1039, 1259, 1279, 1291, 1391, 1431, 1511} (mod 1540).
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MATHEMATICA
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QuadPrimes2[14, -14, 31, 10000] (* see A106856 *)
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PROG
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(Magma) [ p: p in PrimesUpTo(6000) | p mod 1540 in [31, 59, 111, 159, 199, 251, 279, 311, 339, 411, 419, 531, 551, 559, 619, 691, 719, 731, 839, 859, 951, 971, 999, 1039, 1259, 1279, 1291, 1391, 1431, 1511]]; // Vincenzo Librandi, Aug 02 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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STATUS
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approved
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