A045380 Primes congruent to 2 mod 5.

2, 7, 17, 37, 47, 67, 97, 107, 127, 137, 157, 167, 197, 227, 257, 277, 307, 317, 337, 347, 367, 397, 457, 467, 487, 547, 557, 577, 587, 607, 617, 647, 677, 727, 757, 787, 797, 827, 857, 877, 887, 907, 937, 947, 967, 977, 997, 1087, 1097, 1117, 1187, 1217, 1237

Offset

1,1

Links

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

Mathematica

Select[Prime@Range[210], Mod[ #, 5] == 2 &] (* Ray Chandler, Dec 06 2006 *)
Select[Range[2, 1300, 5], PrimeQ] (* Harvey P. Dale, Jul 22 2020 *)

Prog

(Magma) [p: p in PrimesUpTo(1300) | p mod 5 eq 2]; // Vincenzo Librandi, Aug 07 2012
(PARI) is(n)=isprime(n) && n%5==2 \\ Charles R Greathouse IV, Jul 01 2016

Crossrefs

Apart from the initial terms, essentially same as A030432 and A045357. Cf. A095022.

Sequence in context: A116576 A086717 A023657 * A086321 A009302 A154117

Adjacent sequences: A045377 A045378 A045379 * A045381 A045382 A045383

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved