The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217862 Primes p of the form p = 1 + 840*k for some k. 1

%I #7 Mar 03 2018 18:11:40

%S 2521,3361,4201,5881,7561,9241,12601,13441,14281,15121,18481,20161,

%T 21001,21841,26041,26881,29401,30241,31081,33601,35281,41161,42841,

%U 45361,47041,47881,51241,52081,54601,55441,63841,65521,66361,68041,68881,74761,76441,78121

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

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

%H Harvey P. Dale, <a href="/A217862/b217862.txt">Table of n, a(n) for n = 1..1000</a>

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

%t Select[840*Range[0,100]+1,PrimeQ] (* _Harvey P. Dale_, Mar 03 2018 *)

%K nonn,easy

%O 1,1

%A _Joshua S.M. Weiner_, Oct 13 2012

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 18 18:14 EDT 2024. Contains 373486 sequences. (Running on oeis4.)