I wrote up something similar a while back: http://bmm6o.blogspot.com/2008/03/divisibility-testing-and-pattern_27.html http://bmm6o.blogspot.com/2008/03/divisibi

I wrote up something similar a while back: http://bmm6o.blogspot.com/2008/03/divisibility-testing-and-pattern_27.html http://bmm6o.blogspot.com/2008/03/divisibility-testing-and-p... .