Can any base ten repunit, other than 1, be a perfect cube?

If so, give an example. Otherwise prove that no base ten repunit (other than 1) can be a perfect cube.

(In reply to Wow... Is this really a D4? (spoiler--based on Google search) by Charlie)

In general, we prefer not to have unsolved problems on the site, but I think none of us except K knew it was unsolved.

Posted by Gamer on 2011-10-25 15:53:42