A217862 Primes p of the form p = 1 + 840*k for some k.

2521, 3361, 4201, 5881, 7561, 9241, 12601, 13441, 14281, 15121, 18481, 20161, 21001, 21841, 26041, 26881, 29401, 30241, 31081, 33601, 35281, 41161, 42841, 45361, 47041, 47881, 51241, 52081, 54601, 55441, 63841, 65521, 66361, 68041, 68881, 74761, 76441, 78121

Offset: 1

Author

Joshua S.M. Weiner, Oct 13 2012

Keywords

• nonn
• easy

Comments

This is a prime sequence based on the wheel factorization of 840. There are 192 congruence classes that form prime wheel spokes mod 840.

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Programs

Mathematica

Select[Prime[Range[5000]], Mod[#, 840] == 1 &]
Select[840*Range[0,100]+1,PrimeQ] (* Harvey P. Dale, Mar 03 2018 *)