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A051079 Primes p such that x^20 = -2 has a solution mod p. 2
2, 3, 19, 43, 59, 67, 73, 83, 89, 107, 113, 139, 163, 179, 227, 233, 251, 257, 283, 307, 337, 347, 353, 379, 419, 443, 467, 499, 523, 547, 563, 571, 577, 587, 593, 617, 619, 643, 659, 683, 739, 787, 827, 859, 883, 907, 937, 947, 971, 1019, 1033, 1049, 1097, 1123 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Complement of A216741 relative to A000040. - Vincenzo Librandi, Sep 16 2012
LINKS
MATHEMATICA
ok[p_]:= Reduce[Mod[x^20 + 2, p] == 0, x, Integers] =!= False; Select[Prime[Range[400]], ok] (* Vincenzo Librandi, Sep 15 2012 *)
PROG
(PARI) /* see A051071 */
(Magma) [p: p in PrimesUpTo(1150) | exists(t){x : x in ResidueClassRing(p) | x^20 eq - 2}]; // Vincenzo Librandi, Sep 15 2012
CROSSREFS
Sequence in context: A323786 A215381 A215377 * A051089 A289860 A248702
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Joerg Arndt, Jul 27 2011
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)