A142275 - OEIS

%I #11 Sep 08 2022 08:45:36

%S 241,499,757,929,1187,1531,1789,2477,3079,3251,3767,3853,4111,4283,

%T 4799,5573,5659,6089,6691,6863,6949,7121,7207,7723,8669,9013,9787,

%U 10303,10733,11593,12109,12281,12539,13313,13399,13829,14087,14173,14431,14947,15377

%N Primes congruent to 26 mod 43.

%H Vincenzo Librandi, <a href="/A142275/b142275.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 42n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[5000]],MemberQ[{26},Mod[#,43]]&] (* _Vincenzo Librandi_, Aug 25 2012 *)

%t Select[Range[26,16000,43],PrimeQ] (* _Harvey P. Dale_, Aug 28 2018 *)

%o (Magma) [p: p in PrimesUpTo(16000) | p mod 43 eq 26 ]; // _Vincenzo Librandi_, Aug 25 2012

%o (PARI) is(n)=isprime(n) && n%43==26 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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