Re: [math-fun] n and n^3 have all digits odd

I've chased this out to n<=10^25 and found no more examples. The "chance" that we'll get a hit above this, assuming random distribution of digits, is pretty small. On Wed, Apr 18, 2012 at 8:09 AM, James Buddenhagen <jbuddenh@gmail.com> wrote:

Suppose the positive integers n and n^3 both have all digits odd. Such numbers include 1, 11, 15, 33, 39, 71, 91, 173, 175, 179, 335, 3337, 5597, 7353.  Is this list complete?  This sequence is http://oeis.org/A085597 in OEIS.  But there is no key word indicating that it is a finite sequence.  Is this known to be a finite sequence?