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

Home > Numbers > Sequences
Prime, but not forever (Posted on 2010-08-12) Difficulty: 3 of 5
Cosider the following sequence :
a(0) = p, where p is a prime
a(i+1) =2*a(i)+1) : e.g. 5, 11, 23, 47,...
Prove that there is no value of p creating a sequence of prime numbers only.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
proofDaniel2010-08-12 13:42:36
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 (14)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information