perplexus.info :: Numbers : Unequally Yoked

Home > Numbers

Unequally Yoked (Posted on 2004-02-26)

Find all pairs of unequal integers a, b such that a^b = b^a.

See The Solution Submitted by Aaron

Rating: 3.6250 (8 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Solution

| Comment 3 of 12 |

The only solution is a=2 and b=4; see www.qbyte.org/puzzles/p048s.html for a proof.

Posted by e.g. on 2004-02-26 10:40:21

Please log in:

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:


perplexus dot info