All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Just Math
Power and Divisibility Puzzle (Posted on 2015-08-12) Difficulty: 3 of 5
Determine the total number of positive integer values of N < 20150 such that:
2N - N2 is divisible by 17

No Solution Yet Submitted by K Sengupta    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Analytic solution Comment 6 of 6 |
(In reply to Analytic solution by Jer)

Actually, 2^N has a cycle of 8, so the great-cycle is only 8*17 = 136. 
  Posted by Steve Herman on 2015-08-13 13:41:05

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (0)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information