This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
The problem looks like Catalan's Conjecture, which is solved in 2002. QED is usually written in the end of solutions. So, the answer is 2 0 0 2 .