i would think that any factorial N! would end in zero if N > 9. but i have no idea how many zeroes are at the end of <128!>. On Wed, Apr 14, 2010 at 9:36 AM, Merijn Broeren <merijnb at iloquent.com> wrote: > Does 128! end in a zero? If so, how many? -- Live in a world of your own, but always welcome visitors.