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Primes congruent to 23 mod 36.
2

%I #13 Sep 08 2022 08:45:35

%S 23,59,131,167,239,311,347,383,419,491,563,599,743,887,1031,1103,1283,

%T 1319,1427,1499,1571,1607,1787,1823,1931,2003,2039,2111,2399,2543,

%U 2579,2687,2903,2939,3011,3083,3119,3191,3299,3371,3407,3623,3659,3767,3803,3911

%N Primes congruent to 23 mod 36.

%H Vincenzo Librandi, <a href="/A142107/b142107.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[23, 20000, 36], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jul 02 2011 *)

%t Select[Prime[Range[1500]],MemberQ[{23},Mod[#,36]]&] (* _Vincenzo Librandi_, Aug 19 2012 *)

%o (PARI) select(n->n%36==23,primes(1000)) \\ _Charles R Greathouse IV_, Jul 02, 2011

%o (Magma) [p: p in PrimesUpTo(5000) | p mod 36 eq 23 ]; // _Vincenzo Librandi_, Aug 19 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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