When written as a decimal, the fraction m/n (with m < n, both positive integers) contains the consecutive digits 2, 5, 1 (in this order). Find the smallest possible n.
(In reply to
upper bound by Paul)
Using an Excel spreadsheet I found 127 to be the smallest n with values for m = 32, 54, 76, 107, and 125. Granted, Excel only goes out to nine decimal digits so there could still be a smaller n that would work.
re: upper bound
