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%I #9 Sep 08 2022 08:45:37
%S 23,83,263,383,443,503,563,683,743,863,983,1103,1163,1223,1283,1523,
%T 1583,1823,2003,2063,2243,2423,2543,2663,2843,2903,2963,3023,3083,
%U 3203,3323,3623,3803,3863,3923,4283,4463,4523,4583,4643,4703,4943,5003,5303,5483
%N Primes congruent to 23 mod 60.
%H Vincenzo Librandi, <a href="/A142790/b142790.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 16n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t Select[Prime[Range[800]], MemberQ[{23}, Mod[#, 60]] &] (* _Vincenzo Librandi_, Sep 04 2012 *)
%o (Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 23 ]; // _Vincenzo Librandi_, Sep 04 2012
%o (PARI) is(n)=isprime(n) && n%60==23 \\ _Charles R Greathouse IV_, Jul 02 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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