A141912 - OEIS

%I #18 Sep 08 2022 08:45:35

%S 31,307,353,491,859,997,1181,1319,1549,1733,1871,2239,2377,2423,2699,

%T 2791,2837,3067,3251,3343,3389,3527,3803,4079,4217,4447,4493,4723,

%U 4861,4999,5413,5689,5827,6011,6287,6379,6563,6701,6793,6977,7069,7207,7253,7529

%N Primes congruent to 8 mod 23.

%H Vincenzo Librandi, <a href="/A141912/b141912.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 22n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[8,10000,23],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 05 2011 *)

%o (Magma) [p: p in PrimesUpTo(8000) | p mod 23 eq 8 ]; // _Vincenzo Librandi_, Aug 16 2012

%o (PARI) is(n)=isprime(n) && n%23==8 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040, A040984, A141908, A100201.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008