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A217862 Primes p of the form p = 1 + 840*k for some k. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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

MATHEMATICA

Select[Prime[Range[5000]], Mod[#, 840] == 1 &]

Select[840*Range[0, 100]+1, PrimeQ] (* Harvey P. Dale, Mar 03 2018 *)

CROSSREFS

Sequence in context: A172580 A172684 A172652 * A144971 A217588 A264339

Adjacent sequences:  A217859 A217860 A217861 * A217863 A217864 A217865

KEYWORD

nonn,easy

AUTHOR

Joshua S.M. Weiner, Oct 13 2012

STATUS

approved

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Last modified October 14 14:45 EDT 2019. Contains 328019 sequences. (Running on oeis4.)