%I A123988
%S A123988 3,7,11,13,17,31,37,41,43,59,61,67,73,79,83,89,103,107,109,113,127,131,
%T A123988 137,151,157,179,181,193,199,223,227,229,233,241,251,257,271,277,281,283,
%U A123988 307,313,331,337,347,349,353,367,373,397,401,419,421,433,439,443,449,457
%N A123988 Primes p such that 2^x = 3 (mod p) has no solutions.
%C A123988 Such primes cannot divide solutions to 2^m = 3 (mod m) (see A050259).
%H A123988 J. K. Crump, <a href="http://www.immortaltheory.com/NumberTheory/">Number 
               Theory Web</a>.
%Y A123988 Cf. A050259, A127437 (complement in the primes)
%Y A123988 Sequence in context: A020618 A055211 A045417 this_sequence A045418 A090456 
               A070303
%Y A123988 Adjacent sequences: A123985 A123986 A123987 this_sequence A123989 A123990 
               A123991
%K A123988 nonn
%O A123988 1,1
%A A123988 Artur Jasinski (grafix(AT)csl.pl), Nov 23 2006
%E A123988 Edited by Max Alekseyev, Jan 14 2007