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A040152
Primes p such that x^4 = 22 has a solution mod p.
2
2, 3, 7, 11, 13, 59, 61, 67, 79, 89, 97, 109, 127, 137, 151, 163, 167, 173, 179, 239, 251, 257, 263, 271, 293, 331, 353, 359, 379, 401, 419, 431, 433, 439, 443, 467, 479, 499, 503, 521, 541, 587, 607, 613, 619
OFFSET
1,1
LINKS
MATHEMATICA
ok [p_]:=Reduce[Mod[x^4 - 22, p]== 0, x, Integers]=!= False; Select[Prime[Range[180]], ok] (* Vincenzo Librandi, Sep 12 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(800) | exists(t){x : x in ResidueClassRing(p) | x^4 eq 22}]; // Vincenzo Librandi, Sep 12 2012
CROSSREFS
Sequence in context: A038895 A291657 A113244 * A323353 A188529 A369692
KEYWORD
nonn,easy
AUTHOR
STATUS
approved