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Search: id:A139940
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| A139940 |
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Primes of the form 15x^2+23y^2. |
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+0
1
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| 23, 83, 107, 227, 263, 383, 467, 503, 563, 743, 827, 983, 1103, 1187, 1307, 1367, 1487, 1523, 1583, 1607, 1667, 1847, 1907, 2087, 2207, 2687, 2843, 2903, 2963, 3023, 3323, 3467, 3863, 3947, 4007, 4127, 4283, 4523, 4643, 4703, 4943, 4967
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-1380. See A139827 for more information.
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FORMULA
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The primes are congruent to {23, 83, 107, 143, 203, 227, 263, 287, 383, 467, 503, 527, 563, 707, 743, 803, 827, 983, 1103, 1187, 1247, 1307, 1367} (mod 1380).
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MATHEMATICA
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QuadPrimes[15, 0, 23, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A078597 A160297 A116659 this_sequence A052073 A128825 A167573
Adjacent sequences: A139937 A139938 A139939 this_sequence A139941 A139942 A139943
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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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