A142303 Primes congruent to 25 mod 44.

113, 157, 421, 509, 641, 773, 1213, 1301, 1433, 1609, 1697, 1741, 1873, 2137, 2269, 2357, 2621, 2753, 2797, 3061, 3413, 3457, 3677, 3853, 4073, 4337, 4513, 4733, 4909, 5261, 5393, 5437, 5569, 5657, 5701, 6053, 6229, 6317, 6361, 6449, 6581, 6977, 7109, 7417

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 03 2016

Mathematica

Select[Prime[Range[25000]], MemberQ[{25}, Mod[#, 44]]&] (* Vincenzo Librandi, Aug 25 2012 *)
Select[Range[25, 7500, 44], PrimeQ] (* Harvey P. Dale, Jul 28 2018 *)

Prog

(Magma) [p: p in PrimesUpTo(8000) | p mod 44 eq 25]; // Vincenzo Librandi, Aug 25 2012
(PARI) is(n)=isprime(n) && n%44==25 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A230255 A167631 A264778 * A152929 A142180 A325084

Adjacent sequences: A142300 A142301 A142302 * A142304 A142305 A142306

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved