login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A103667 Primes p such that the largest prime divisor of p-1 is greater than the largest prime divisor of p+1. 8

%I

%S 7,11,23,29,31,47,53,59,71,79,83,89,103,107,127,131,139,149,167,173,

%T 179,191,199,223,227,233,239,263,269,293,307,311,317,347,349,359,367,

%U 373,383,389,419,431,439,449,461,467,479,499,503,509,557,563,569,571,587

%N Primes p such that the largest prime divisor of p-1 is greater than the largest prime divisor of p+1.

%H Karl Hovekamp, <a href="/A103667/b103667.txt">Table of n, a(n) for n=1..39328</a>

%e a(1)=7 because the largest prime divisor of 6 is greater than the largest

%e prime divisor of 8.

%Y Cf. A023503 greatest prime divisor of n-th prime - 1, A023509 greatest prime divisor of n-th prime + 1, A103666.

%K nonn

%O 1,1

%A _Hugo Pfoertner_, Feb 19 2005

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 29 17:14 EDT 2020. Contains 337432 sequences. (Running on oeis4.)