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%I #12 Sep 08 2022 08:45:35
%S 7,83,197,311,349,463,577,653,691,881,919,1033,1109,1223,1451,1489,
%T 1831,1907,2287,2477,2591,2819,2857,2971,3313,3389,3541,3617,3769,
%U 4073,4111,4339,4567,4643,4871,4909,5023,5099,5441,5479,5669,5783,5821,5897,6011
%N Primes congruent to 7 mod 19.
%H Vincenzo Librandi, <a href="/A141872/b141872.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 18n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Range[7,5000,19],PrimeQ[#]&] (* _Vladimir Joseph Stephan Orlovsky_, Mar 31 2011*)
%o (Magma) [p: p in PrimesUpTo(8000) | p mod 19 eq 7 ]; // _Vincenzo Librandi_, Aug 15 2012
%o (PARI) is(n)=isprime(n) && n%19==7 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040, A105854, A141881, A141882, A141883.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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