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Primes of the form q*p+2^p where p is prime, q=9.
6

%I #2 Mar 31 2012 12:38:20

%S 191,536871173,2199023255921,10384593717069655257060992658441209

%N Primes of the form q*p+2^p where p is prime, q=9.

%t lst={};Do[p=Prime[n];If[PrimeQ[p=9*p+2^p],AppendTo[lst,p]],{n,5!}];lst

%Y Cf. A057664, A155841, A155842

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Jan 28 2009