A141937 Primes congruent to 13 mod 25.

13, 113, 163, 263, 313, 463, 563, 613, 863, 1013, 1063, 1163, 1213, 1613, 1663, 1913, 2063, 2113, 2213, 2663, 2713, 2963, 3163, 3313, 3413, 3463, 3613, 3863, 4013, 4363, 4463, 4513, 4663, 4813, 5113, 5413, 5563, 5813, 6113, 6163, 6263, 6563, 6763, 6863

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[13, 20000, 25], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 15 2011 *)
Select[Prime[Range[1000]], Mod[#, 25]==13&] (* Harvey P. Dale, May 30 2021 *)

Prog

(Magma) [p: p in PrimesUpTo(8000) | p mod 25 eq 13 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%25==13 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A166573 A044726 A303038 * A320464 A302875 A303523

Adjacent sequences: A141934 A141935 A141936 * A141938 A141939 A141940

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved