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%I #12 Sep 08 2022 08:45:35
%S 23,89,353,419,617,683,881,947,1013,1277,1409,1607,1871,2003,2069,
%T 2267,2333,2399,2531,2663,2729,2861,2927,3191,3257,3323,3389,3719,
%U 3851,3917,4049,4643,4973,5039,5171,5237,5303,5501,5897,6029,6359,6491,6689,7019
%N Primes congruent to 23 mod 33.
%H Vincenzo Librandi, <a href="/A142062/b142062.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 20n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t Select[Range[23, 20000, 33], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 24 2011 *)
%t Select[Prime[Range[3000]],MemberQ[{23},Mod[#,33]]&] (* _Vincenzo Librandi_, Aug 18 2012 *)
%o (Magma) [p: p in PrimesUpTo(8000) | p mod 33 eq 23 ]; // _Vincenzo Librandi_, Aug 18 2012
%o (PARI) is(n)=isprime(n) && n%33==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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