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A049544 Primes p such that x^12 = 2 has a solution mod p. 5
2, 23, 31, 47, 71, 89, 113, 127, 167, 191, 223, 233, 239, 257, 263, 281, 311, 353, 359, 383, 431, 439, 479, 503, 593, 599, 601, 617, 647, 719, 727, 743, 839, 863, 881, 887, 911, 919, 983, 1031, 1049, 1097, 1103, 1151, 1193, 1217, 1223, 1289, 1319, 1327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A059264 relative to A000040. - Vincenzo Librandi, Sep 13 2012

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..1000

Index entries for related sequences

MATHEMATICA

ok[p_]:= Reduce[Mod[x^12- 2, p] == 0, x, Integers]=!=False; Select[Prime[Range[200]], ok] (* Vincenzo Librandi, Sep 13 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(1400) | exists(t){x : x in ResidueClassRing(p) | x^12 eq 2}]; // Vincenzo Librandi, Sep 13 2012

CROSSREFS

Cf. A000040, A059264.

Sequence in context: A053232 A065987 A107153 * A049568 A049556 A049580

Adjacent sequences:  A049541 A049542 A049543 * A049545 A049546 A049547

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 15 17:55 EDT 2018. Contains 316237 sequences. (Running on oeis4.)