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Search: id:A139976
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| A139976 |
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Primes of the form 23x^2+6xy+23y^2. |
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+0
2
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| 23, 103, 127, 263, 367, 503, 607, 647, 727, 823, 887, 1063, 1223, 1303, 1327, 1447, 1543, 1583, 1663, 1823, 1847, 2063, 2207, 2287, 2383, 2447, 2687, 2887, 2903, 3407, 3527, 3623, 3727, 3767, 3823, 3847, 3943, 4007, 4423, 4447, 4463, 4567
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-2080. See A139827 for more information.
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FORMULA
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The primes are congruent to {23, 87, 103, 127, 183, 207, 263, 287, 303, 367, 407, 503} (mod 520).
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CROSSREFS
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Adjacent sequences: A139973 A139974 A139975 this_sequence A139977 A139978 A139979
Sequence in context: A142132 A140375 A142173 this_sequence A142192 A129918 A138715
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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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