Hi! is there a (fast) way in Dr.Scheme to generate random numbers with arbitrary upper bound. The implemented random number generator gives numbers in the range from 0 to 2^31. I am playing with RSA and I need to generate say 100 digits long randoms. Thanks. David. ------------------ David Skoupil Palacky University email: skoupil@upol.cz web: http://www.inf.upol.cz/~skoupil