A141917 - OEIS

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

%S 13,59,151,197,887,1117,1163,1301,1439,1531,1669,2083,2129,2221,2267,

%T 2543,2819,2957,3049,3187,3371,3463,3739,3877,3923,4153,4337,4567,

%U 4751,4889,5119,5303,5441,5717,6131,6269,6361,6637,6959,7603,7649,7741,7879,8017

%N Primes congruent to 13 mod 23.

%H Vincenzo Librandi, <a href="/A141917/b141917.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[13,10000,23],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 05 2011 *)

%o (Magma) [p: p in PrimesUpTo(9000) | p mod 23 eq 13 ]; // _Vincenzo Librandi_, Aug 16 2012

%o (PARI) is(n)=isprime(n) && n%23==13 \\ _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