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Search: id:A139856
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| A139856 |
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Primes of the form 5x^2+24y^2. |
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+0
2
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| 5, 29, 101, 149, 269, 389, 461, 509, 701, 821, 941, 1061, 1109, 1181, 1229, 1301, 1709, 1901, 1949, 2069, 2141, 2309, 2381, 2549, 2621, 2741, 2789, 2861, 2909, 3221, 3389, 3461, 3581, 3701, 3821, 3989, 4229, 4349, 4421, 5021, 5189, 5261
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OFFSET
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1,1
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COMMENT
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Discriminant=-480. See A139827 for more information.
Except for 5, also primes of the form 21x^2+6xy+29y^2. See A140633. - T. D. Noe (noe(AT)sspectra.com), May 19 2008
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FORMULA
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Except for 5, the primes are congruent to {29, 101} (mod 120).
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MATHEMATICA
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QuadPrimes[5, 0, 24, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A154412 A050409 A111937 this_sequence A097345 A097344 A153076
Adjacent sequences: A139853 A139854 A139855 this_sequence A139857 A139858 A139859
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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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