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A107215
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Primes of the form x^2 + 98y^2.
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2
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107, 179, 401, 617, 827, 883, 907, 1051, 1171, 1187, 1481, 1619, 1723, 1913, 2251, 2297, 2417, 2459, 2531, 2657, 2699, 2731, 3089, 3347, 3529, 3539, 3593, 3691, 3697, 3889, 3907, 4057, 4153, 4363, 4603, 4817, 5051, 5107, 5153, 5209, 5531
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OFFSET
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1,1
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COMMENTS
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Discriminant = -392. See A107132 for more information.
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LINKS
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MATHEMATICA
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QuadPrimes2[1, 0, 98, 10000] (* see A106856 *)
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PROG
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(PARI) list(lim)=my(v=List(), w, t); for(x=1, sqrtint(lim\1), w=x^2; for(y=1, sqrtint((lim-w)\98), if(isprime(t=w+98*y^2), listput(v, t)))); Set(v) \\ Charles R Greathouse IV, Feb 10 2017
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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