A045429 Primes congruent to {1, 3} mod 5.

3, 11, 13, 23, 31, 41, 43, 53, 61, 71, 73, 83, 101, 103, 113, 131, 151, 163, 173, 181, 191, 193, 211, 223, 233, 241, 251, 263, 271, 281, 283, 293, 311, 313, 331, 353, 373, 383, 401, 421, 431, 433, 443, 461, 463, 491, 503, 521, 523, 541, 563, 571, 593, 601, 613, 631, 641

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Comments

A039703(A049084(a(n))) = odd; complement of A045356. - Reinhard Zumkeller, Feb 25 2008

Links

• R. Zumkeller, Table of n, a(n) for n = 1..1001

Crossrefs

Cf. A000040, A045415, A137978.

Programs

Magma

[ p: p in PrimesUpTo(600) | p mod 5 in {1,3} ]; // Vincenzo Librandi, Aug 13 2012

Mathematica

Select[Prime[Range[200]], MemberQ[{1, 3}, Mod[#, 5]] &] (* Vincenzo Librandi, Aug 13 2012 *)
Select[Prime[Range[200]], OddQ[Mod[#, 5]] &] (* Zak Seidov, Aug 31 2012 *)