%I #12 Sep 08 2022 08:45:35

%S 13,109,173,269,397,461,557,653,877,941,1069,1229,1453,1549,1613,1709,

%T 1741,1901,1933,1997,2029,2221,2381,2477,2797,2861,2957,3181,3373,

%U 3469,3533,3821,3853,3917,4013,4397,4493,4621,4813,4877,4909,4973,5101,5197,5261

%N Primes congruent to 13 mod 32.

%H Vincenzo Librandi, <a href="/A142040/b142040.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 16n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[13,20000,32],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, May 02 2011 *)

%t Select[Prime[Range[2000]],MemberQ[{13},Mod[#,32]]&] (* _Vincenzo Librandi_, Aug 18 2012 *)

%o (Magma) [p: p in PrimesUpTo(6000) | p mod 32 eq 13 ]; // _Vincenzo Librandi_, Aug 18 2012

%o (PARI) is(n)=isprime(n) && n%32==13 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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