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

Home > Numbers
A surprising prime gap (Posted on 2016-07-27) Difficulty: 3 of 5
N is a positive integer. If you list the positive integers in rows of N such that the first row contains 1 to N, the second row contains N+1 to 2*N, and so on, then the first row with no prime is immediately followed by another row with no prime. What is N?

See The Solution Submitted by Math Man    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(5): My solution Charlie2016-08-01 07:57:10
re(4): My solution Jer2016-07-31 21:45:02
re(3): My solution Charlie2016-07-31 18:45:10
Questionre(2): My solution Ady TZIDON2016-07-31 02:21:06
re: My solutionMath Man2016-07-30 20:37:42
re: My solutionCharlie2016-07-30 09:13:56
My solutionJer2016-07-27 18:05:19
Solutioncomputer solutionCharlie2016-07-27 16:45:07
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 (3)
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