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%I #12 Sep 08 2022 08:45:35
%S 43,71,127,211,239,379,463,491,547,631,659,743,827,883,911,967,1051,
%T 1163,1303,1471,1499,1583,1667,1723,2003,2087,2143,2311,2339,2423,
%U 2591,2647,2731,2843,2927,3011,3067,3319,3347,3571,3739,3767,3823,3851,3907,4019
%N Primes congruent to 15 mod 28.
%H Vincenzo Librandi, <a href="/A141971/b141971.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 12n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Prime[Range[600]],Mod[#,28]==15&] (* _Harvey P. Dale_, Nov 01 2011 *)
%o (Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 15 ]; // _Vincenzo Librandi_, Aug 17 2012
%o (PARI) is(n)=isprime(n) && n%28==15 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008