A141997 - OEIS

%I #17 Sep 08 2022 08:45:35

%S 79,137,311,601,659,1123,1181,1297,1471,1877,1993,2341,2399,2689,3037,

%T 3559,3617,3733,3907,4139,4603,4951,5009,5531,5647,5821,5879,6053,

%U 6343,6691,7039,7213,7561,7793,8431,8663,8779,8837,9011,9127,9533,9649,10867,11273

%N Primes congruent to 21 mod 29.

%H Vincenzo Librandi, <a href="/A141997/b141997.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 28n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[21,20000,29],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 07 2011 *)

%o (Magma) [p: p in PrimesUpTo(12000) | p mod 29 eq 21 ]; // _Vincenzo Librandi_, Aug 17 2012

%o (PARI) is(n)=isprime(n) && n%29==21 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040, A141977, A141978.

%K nonn,easy

%O 1,1

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