%I #14 Sep 08 2022 08:45:34
%S 2,7,13,19,23,29,31,37,43,59,61,67,73,79,89,97,103,107,109,127,139,
%T 149,151,157,163,179,181,191,193,199,211,223,227,229,233,239,241,263,
%U 269,271,277,283,293,307,313,317,331,337,349,359,367,373,379,389,397,401
%N Primes p such that p + 26 is not a prime.
%t Select[Prime[Range[500]],!PrimeQ[#+26]&] (* _Harvey P. Dale_, Oct 30 2011 *)
%o (Magma) [p: p in PrimesUpTo(1000)|not IsPrime(p+26)] // _Vincenzo Librandi_, Dec 18 2010
%K nonn
%O 1,1
%A _Juri-Stepan Gerasimov_, Jul 03 2008
%E Corrected (13 inserted) by _R. J. Mathar_, Apr 25 2010