|
%I #11 Sep 08 2022 08:45:36
%S 307,401,683,1153,1811,1999,2281,2657,2939,3221,3691,4349,5101,5477,
%T 6229,6323,6793,7451,7639,8297,8861,9049,9613,10177,10271,10459,11117,
%U 11399,11587,11681,12433,12527,12809,14407,14783,15629,15817,16193,16381,17321
%N Primes congruent to 25 mod 47.
%H Vincenzo Librandi, <a href="/A142376/b142376.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[{25},Mod[#,47]]&] (* _Vincenzo Librandi_, Aug 27 2012
%t Select[Range[25,18000,47],PrimeQ] (* _Harvey P. Dale_, Jun 13 2017 *)
%o (Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 25]; // _Vincenzo Librandi_, Aug 27 2012
%o (PARI) is(n)=isprime(n) && n%47==25 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
|
