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Search: id:A139874
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| A139874 |
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Primes of the form 3x^2+56y^2. |
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+0
3
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| 3, 59, 83, 131, 227, 251, 419, 467, 563, 587, 971, 1091, 1259, 1307, 1427, 1571, 1811, 1907, 1931, 1979, 2099, 2243, 2267, 2411, 2579, 2819, 2939, 3083, 3251, 3323, 3491, 3659, 3779, 3923, 3947, 4091, 4259, 4283, 4451, 4787, 4931, 5003
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-672. See A139827 for more information.
Except for 3, also primes of the form 20x^2+12xy+27y^2. See A140633. - T. D. Noe (noe(AT)sspectra.com), May 19 2008
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FORMULA
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Except for 3, the primes are congruent to {59, 83, 131} (mod 168).
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CROSSREFS
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Sequence in context: A049661 A100611 A139882 this_sequence A107212 A002148 A057175
Adjacent sequences: A139871 A139872 A139873 this_sequence A139875 A139876 A139877
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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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