%I A125000
%S A125000 2873,10081,3345113,420048673,449349533
%N A125000 Numbers n such that 2^n (mod n) = 19.
%Y A125000 Cf. A124974 2^n (mod n) = 17, A033981 2^n (mod n) = 7, A050259 2^n = 
               3 (mod n), A124977 Least number m such that 2^m (mod m) = 2n+1, A124965 
               Odd values of 2^n (mod n) for n's in A015911, A015911 2^n (mod n) 
               is odd, A015910 2^n (mod n).
%Y A125000 Cf. A015910, A015911, A033981, A050259, A124965, A124974, A124977, A015910, 
               A015911.
%Y A125000 Sequence in context: A045147 A020429 A067703 this_sequence A081427 A101999 
               A066174
%Y A125000 Adjacent sequences: A124997 A124998 A124999 this_sequence A125001 A125002 
               A125003
%K A125000 nonn
%O A125000 1,1
%A A125000 Zak Seidov (zakseidov(AT)yahoo.com), Nov 15 2006