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 A059666 Primes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p. 3
 3943, 11287, 20143, 23599, 25759, 26407, 29863, 32833, 33751, 38287, 39367, 39799, 46441, 47737, 47791, 59887, 62047, 63127, 68311, 73063, 79273, 82351, 84457, 84673, 88129, 90289, 91639, 93529, 94447, 101089, 104761, 107839, 140617, 144073, 146449, 150607 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..49 MATHEMATICA Select[Prime[Range[PrimePi[200000]]], !MemberQ[PowerMod[Range[#], 54, #], Mod[2, #]] && MemberQ[PowerMod[Range[#], 18, #], Mod[2, #]]&] (* Vincenzo Librandi, Sep 21 2013 *) PROG (MAGMA) [p: p in PrimesUpTo(40000) | not exists{x: x in ResidueClassRing(p) | x^54 eq 2} and exists{x: x in ResidueClassRing(p) | x^18 eq 2}]; // Vincenzo Librandi, Sep 21 2012 CROSSREFS Sequence in context: A346135 A070185 A059354 * A230707 A230617 A250531 Adjacent sequences:  A059663 A059664 A059665 * A059667 A059668 A059669 KEYWORD nonn,easy AUTHOR Klaus Brockhaus, Feb 05 2001 EXTENSIONS More terms from Vincenzo Librandi, Sep 21 2013 STATUS approved

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Last modified December 5 23:38 EST 2021. Contains 349558 sequences. (Running on oeis4.)