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 A161616 Primes p such that 2*p+111546435 is also prime. 1

%I

%S 29,41,53,71,79,97,103,113,127,131,137,139,151,163,179,197,199,223,

%T 227,257,271,277,283,311,313,331,337,349,353,383,389,401,419,431,443,

%U 461,503,521,563,619,643,653,673,683,769,809,827,883,887,911,919,929,947

%N Primes p such that 2*p+111546435 is also prime.

%C 3*5*7*11*13*17*19*23 = 111546435 = A046326(2) = A147581(1).

%H Vincenzo Librandi, <a href="/A161616/b161616.txt">Table of n, a(n) for n = 1..1000</a>

%t a=3*5*7*11*13*17*19*23;c=0;lst={};Do[p=Prime[n];If[PrimeQ[2*p+a],AppendTo[lst,p],c++ ],{n,6!}];lst

%t Select[Prime[Range[200]], PrimeQ[2 # + 111546435]&] (* _Vincenzo Librandi_, Apr 15 2013 *)

%o (MAGMA) [p: p in PrimesUpTo(1000) | IsPrime(2*p + 111546435)]; // _Vincenzo Librandi_, Apr 15 2013

%K nonn,less

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Jun 14 2009

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Last modified September 26 09:15 EDT 2021. Contains 347664 sequences. (Running on oeis4.)