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A040107
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Primes p such that x^4 = 6 has a solution mod p.
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2
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2, 3, 5, 19, 23, 43, 47, 67, 71, 97, 139, 149, 163, 167, 173, 191, 211, 239, 241, 263, 283, 307, 311, 331, 359, 379, 383, 389, 409, 431, 457, 461, 479, 499, 503, 523, 547, 557, 571, 577, 599, 601, 619, 643, 647
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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ok [p_]:=Reduce[Mod[x^4- 6, p] == 0, x, Integers] =!= False; Select[Prime[Range[200]], ok] (* Vincenzo Librandi, Sep 11 2012 *)
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PROG
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(Magma) [p: p in PrimesUpTo(800) | exists(t){x : x in ResidueClassRing(p) | x^4 eq 6}]; // Vincenzo Librandi, Sep 11 2012
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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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