%I #11 Sep 08 2022 08:45:36
%S 13,107,389,577,859,953,1423,1987,2081,2269,2551,2833,2927,3209,3491,
%T 4243,4337,5653,6029,6217,6311,6781,8191,8849,9319,9413,9601,9883,
%U 10259,10729,12421,12703,13267,13831,14207,14489,14771,15053,15241,16087,16369,16651
%N Primes congruent to 13 mod 47.
%H Vincenzo Librandi, <a href="/A142364/b142364.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 46n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Prime[Range[2500]],MemberQ[{13},Mod[#,47]]&] (* _Vincenzo Librandi_, Aug 27 2012 *)
%t Select[Range[13,17000,47],PrimeQ] (* _Harvey P. Dale_, Mar 24 2013 *)
%o (Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 13]; // _Vincenzo Librandi_, Aug 27 2012
%o (PARI) is(n)=isprime(n) && n%47==13 \\ _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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