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Search: id:A139916
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| A139916 |
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Primes of the form 7x^2+40y^2. |
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+0
1
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| 7, 47, 103, 167, 223, 367, 383, 503, 607, 647, 727, 887, 983, 1063, 1223, 1447, 1487, 1543, 1567, 1783, 1823, 1847, 2063, 2287, 2383, 2663, 2687, 2887, 2903, 3023, 3167, 3407, 3463, 3527, 3583, 3727, 3863, 3967, 4007, 4423, 4567, 4583, 4703
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-1120. See A139827 for more information.
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FORMULA
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Except for 7, the primes are congruent to {47, 87, 103, 143, 167, 223} (mod 280).
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MATHEMATICA
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QuadPrimes[7, 0, 40, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A141882 A067658 A044490 this_sequence A009219 A142185 A158914
Adjacent sequences: A139913 A139914 A139915 this_sequence A139917 A139918 A139919
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), May 02 2008
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