My Math Forum Composite for ever
 User Name Remember Me? Password

 Number Theory Number Theory Math Forum

 July 4th, 2016, 06:54 AM #1 Banned Camp   Joined: Dec 2013 Posts: 1,117 Thanks: 41 Composite for ever a is a positive integer>2 k is an odd integer Let k=a^(a+1)+(a+1)^a Examples : a=3 k=3^4+4^3=145 is composite If a>2 k is always composite. True or false?
 July 4th, 2016, 08:38 AM #2 Banned Camp   Joined: Dec 2013 Posts: 1,117 Thanks: 41 Sorry for the mistake : a is an odd number >2 As I can not edit it sorry.
 July 8th, 2016, 08:14 AM #3 Banned Camp   Joined: Dec 2013 Posts: 1,117 Thanks: 41 Expanding k could lead to a factorization and consequently to a definitive proof. But how to do it?

 Tags composite

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post jiasyuen Algebra 1 March 1st, 2014 10:16 AM johnny993 Algebra 4 November 11th, 2013 11:01 AM ungeheuer Computer Science 1 May 29th, 2013 09:11 AM Bogauss Number Theory 26 February 21st, 2011 01:29 PM symmetry Algebra 1 June 12th, 2007 10:07 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top