A142375 - OEIS

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

%S 71,353,541,823,1481,1669,1951,2609,2797,3079,3361,3643,4019,4583,

%T 5147,5711,7027,7121,7309,7591,7873,8719,9001,9283,9377,9941,10223,

%U 11069,11257,11351,11633,11821,12197,12479,13043,13513,14923,15017,15299,15581,16333

%N Primes congruent to 24 mod 47.

%H Vincenzo Librandi, <a href="/A142375/b142375.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 46n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[2500]],MemberQ[{24},Mod[#,47]]&] (* _Vincenzo Librandi_, Aug 27 2012 *)

%t Select[Range[24,17000,47],PrimeQ] (* _Harvey P. Dale_, Aug 12 2017 *)

%o (Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 24]; // _Vincenzo Librandi_, Aug 27 2012

%o (PARI) is(n)=isprime(n) && n%47==24 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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