Search: id:A138646
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%I A138646
%S A138646 2,7,13,19,29,31,37,41,43,61,67,73,79,83,97,103,107,109,127,139,151,157,
%T A138646 163,167,179,181,193,199,211,223,227
%N A138646 Primes p such that 5*p-2 is composite.
%e A138646 5*2-2=8, 5*7-2=33, 5*13-2=63,...
%t A138646 a={};Do[p=Prime[n];If[ !PrimeQ[5*p-2],AppendTo[a,p]],{n,8^2}];a
%Y A138646 Sequence in context: A063637 A020623 A109346 this_sequence A118755 A156012 
               A106011
%Y A138646 Adjacent sequences: A138643 A138644 A138645 this_sequence A138647 A138648 
               A138649
%K A138646 nonn
%O A138646 1,1
%A A138646 Vladimir Orlovsky (4vladimir(AT)gmail.com), May 15 2008

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