On 20-Jun-07, at 10:02 AM, |/|/ Bendick wrote: > Ahh.. enlightening. If that is the case shouldn't (define big (expt 2 > (expt 2 25))) fail? (It does not). That's because (expt 2 (expt 2 25)) takes 2^25 *bits*, i.e. 2^22 *bytes*, which is fine. Marc