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A107208
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Primes of the form 4x^2 + 23y^2.
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2
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23, 59, 167, 211, 223, 271, 307, 347, 463, 599, 607, 691, 719, 883, 991, 1151, 1163, 1231, 1319, 1451, 1787, 1867, 1871, 1879, 2027, 2143, 2339, 2347, 2423, 2539, 2647, 2707, 2819, 2879, 2887, 2927, 2939, 3019, 3307, 3343, 3359, 3463, 3491
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OFFSET
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1,1
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COMMENTS
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Discriminant = -368. See A107132 for more information.
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LINKS
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MATHEMATICA
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QuadPrimes2[4, 0, 23, 10000] (* see A106856 *)
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PROG
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(PARI) list(lim)=my(v=List(), w, t); for(x=0, sqrtint(lim\4), w=4*x^2; for(y=1, sqrtint((lim-w)\23), if(isprime(t=w+23*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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