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%I #2 Mar 31 2012 12:38:17
%S 13,127,543607,3183060102526390833854311,
%T 44487435359130133495783012898708551,
%U 418364165757172442919546303805118823151668308251259902807
%N Primes of the form : 7^n-6^n.
%C 7^2-6^2=49-36=13,...
%t lst={};Do[p=7^n-6^n;If[PrimeQ[p],AppendTo[lst,p]],{n,6!}];lst
%Y Cf. A062573
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, Nov 10 2008
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