A141972 Primes congruent to 17 mod 28.

17, 73, 101, 157, 241, 269, 353, 409, 521, 577, 661, 773, 829, 857, 941, 997, 1109, 1193, 1249, 1277, 1361, 1613, 1669, 1697, 1753, 1949, 2089, 2341, 2593, 2621, 2677, 2789, 2957, 3041, 3181, 3209, 3433, 3461, 3517, 3769, 3797, 3853, 3881, 4021, 4049, 4133

Offset

1,1

Links

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

Formula

a(n) ~ 12n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[1500]], MemberQ[{17}, Mod[#, 28]]&] (* Vincenzo Librandi, Aug 17 2012 *)
Select[Range[17, 5000, 28], PrimeQ] (* Harvey P. Dale, Mar 23 2021 *)

Prog

(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 17 ]; // Vincenzo Librandi, Aug 17 2012
(PARI) is(n)=isprime(n) && n%28==17 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

CF. A000040.

Sequence in context: A139919 A043194 A043974 * A161735 A142648 A002189

Adjacent sequences: A141969 A141970 A141971 * A141973 A141974 A141975

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved