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%I #9 Sep 08 2022 08:45:36
%S 31,461,547,719,977,1063,1321,1493,1579,2267,3041,3299,3557,3643,4073,
%T 4159,4933,5449,5879,6481,6653,6911,6997,8287,8803,9319,9491,9749,
%U 10007,10093,10781,10867,11383,11813,12071,12157,12329,13103,13619,13877,13963,14221
%N Primes congruent to 31 mod 43.
%H Vincenzo Librandi, <a href="/A142280/b142280.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 42n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Prime[Range[5000]],MemberQ[{31},Mod[#,43]]&] (* _Vincenzo Librandi_, Aug 25 2012 *)
%o (Magma) [p: p in PrimesUpTo(16000) | p mod 43 eq 31 ]; // _Vincenzo Librandi_, Aug 25 2012
%o (PARI) is(n)=isprime(n) && n%43==31 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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