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A049546 Primes p such that x^14 = 2 has a solution mod p. 2
2, 7, 17, 23, 31, 41, 47, 73, 79, 89, 97, 103, 137, 151, 167, 191, 193, 199, 223, 233, 241, 257, 263, 271, 311, 313, 353, 359, 367, 383, 401, 409, 431, 433, 439, 457, 479, 487, 503, 521, 569, 577, 593, 599, 601, 607, 631, 641, 647, 673, 719, 727, 751, 761 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A059265 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^14- 2, p] == 0, x, Integers]=!=False; Select[Prime[Range[200]], ok] (* Vincenzo Librandi, Sep 13 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(800) | exists(t){x : x in ResidueClassRing(p) | x^14 eq 2}]; // Vincenzo Librandi, Sep 13 2012

CROSSREFS

Cf. A000040, A059265.

Sequence in context: A049570 A049566 A049558 * A049578 A162574 A215823

Adjacent sequences:  A049543 A049544 A049545 * A049547 A049548 A049549

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified September 28 10:51 EDT 2020. Contains 337393 sequences. (Running on oeis4.)