|
%I #12 Sep 08 2022 08:45:37
%S 31,251,691,911,1021,1571,1901,2011,2341,2671,3001,3221,3331,3881,
%T 4211,4651,4871,5531,5641,5861,6301,6521,6961,7621,7841,7951,8171,
%U 8501,8831,8941,9161,9491,9601,9931,10151,11251,11471,11801,12241,12791,13121,13451
%N Primes congruent to 31 mod 55.
%H Vincenzo Librandi, <a href="/A142623/b142623.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime[Range[2500]], MemberQ[{31}, Mod[#, 55]] &] (* _Vincenzo Librandi_, Aug 31 2012 *)
%t Select[Range[31,14000,55],PrimeQ] (* _Harvey P. Dale_, Dec 16 2017 *)
%o (Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 31]; // _Vincenzo Librandi_, Aug 31 2012
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
|
