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%I #9 Sep 08 2022 08:45:37
%S 13,127,241,811,1039,1153,1381,1609,1723,1951,2179,2293,2521,2749,
%T 3319,3433,3547,3889,4003,4231,4801,5827,6397,6967,7309,7537,7879,
%U 7993,8221,8563,8677,9133,9817,9931,10159,10273,10501,10729,10957,11071,11299,11527
%N Primes congruent to 13 mod 57.
%H Vincenzo Librandi, <a href="/A142673/b142673.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime[Range[2400]], MemberQ[{13}, Mod[#, 57]] &] (* _Vincenzo Librandi_, Sep 01 2012 *)
%t Select[Range[13,12000,57],PrimeQ] (* _Harvey P. Dale_, Jul 24 2015 *)
%o (Magma) [p: p in PrimesUpTo(12000) | p mod 57 eq 13 ]; // _Vincenzo Librandi_, Sep 01 2012
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008