A141942 Primes congruent to 19 mod 25.

19, 269, 419, 569, 619, 719, 769, 919, 1019, 1069, 1319, 1619, 1669, 2069, 2269, 2719, 2819, 2969, 3019, 3119, 3169, 3319, 3469, 3719, 3769, 3919, 4019, 4219, 4519, 4919, 4969, 5119, 5419, 5519, 5569, 5669, 5869, 6269, 6469, 6569, 6619, 6719, 6869, 7019

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

a(n) ~ 20n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Range[19, 20000, 25], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 15 2011 *)
Select[Prime[Range[1000]], Mod[#, 25]==19&] (* Harvey P. Dale, Nov 18 2021 *)

Prog

(Magma) [p: p in PrimesUpTo(8000) | p mod 25 eq 19 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%25==19 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A016302 A253217 A245237 * A181043 A142899 A083004

Adjacent sequences: A141939 A141940 A141941 * A141943 A141944 A141945

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved