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%I #12 Sep 08 2022 08:45:37
%S 23,353,463,683,1013,1123,1453,1783,2003,2113,2333,2663,3323,3433,
%T 4093,4423,4643,4973,5303,5413,5743,6073,6733,7283,7393,7723,8053,
%U 8273,8713,8933,9043,9923,10253,11243,11353,11903,12343,12893,13003,13553,13883,14323
%N Primes congruent to 23 mod 55.
%H Vincenzo Librandi, <a href="/A142617/b142617.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 40n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t Select[Range[23,15000,55],PrimeQ] (* _Harvey P. Dale_, Apr 22 2012 *)
%t Select[Prime[Range[2500]], MemberQ[{23}, Mod[#, 55]] &] (* _Vincenzo Librandi_, Aug 31 2012 *)
%o (Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 23]; // _Vincenzo Librandi_, Aug 31 2012
%o (PARI) is(n)=isprime(n) && n%55==23 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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