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 A049571 Primes p such that x^39 = 2 has a solution mod p. 2
 2, 3, 5, 11, 17, 23, 29, 31, 41, 43, 47, 59, 71, 83, 89, 101, 107, 109, 113, 127, 137, 149, 167, 173, 179, 191, 197, 223, 227, 229, 233, 239, 251, 257, 263, 269, 277, 281, 283, 293, 307, 311, 317, 347, 353, 359, 383, 389, 397, 401, 419, 431, 433, 439, 449, 457 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Complement of A059350 relative to A000040. - Vincenzo Librandi, Sep 14 2012 LINKS R. J. Mathar, Table of n, a(n) for n = 1..1000 MATHEMATICA ok[p_]:= Reduce[Mod[x^39 - 2, p] == 0, x, Integers] =!= False; Select[Prime[Range[100]], ok] (* Vincenzo Librandi, Sep 14 2012 *) PROG (MAGMA) [p: p in PrimesUpTo(500) | exists(t){x : x in ResidueClassRing(p) | x^39 eq 2}]; // Vincenzo Librandi, Sep 14 2012 CROSSREFS Cf. A000040, A059350. Sequence in context: A049589 A049583 A049596 * A098058 A040054 A093503 Adjacent sequences:  A049568 A049569 A049570 * A049572 A049573 A049574 KEYWORD nonn,easy AUTHOR STATUS approved

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