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A142818 Primes congruent to 20 mod 61. 1

%I #7 Sep 08 2022 08:45:37

%S 569,691,1301,1423,1667,1789,2399,2521,2887,3253,3863,4229,5449,5693,

%T 6547,6791,7523,8011,8377,9109,9719,10939,11549,12037,12281,12647,

%U 14843,15331,16063,16673,18503,18869,20089,20333,21187,22651,23017,23627,23993,24359

%N Primes congruent to 20 mod 61.

%H Vincenzo Librandi, <a href="/A142818/b142818.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[3000]], MemberQ[{20}, Mod[#, 61]] &] (* _Vincenzo Librandi_, Sep 05 2012 *)

%o (Magma) [p: p in PrimesUpTo(25000) | p mod 61 eq 20]; // _Vincenzo Librandi_, Sep 05 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)