On Jan 31, 9:36 pm, "Tim Roberts" <t.robe...@cqu.edu.au> wrote: > Actually, all I'm interested in is whether the 100 digit numbers have an > exact integral root, or not. At the moment, because of accuracy concerns, > I'm doing something like > > for root in powersp: > nroot = round(bignum**(1.0/root)) > if bignum==long(nroot)**root: > ......... > which is probably very inefficient, but I can't see anything better..... > > Tim
Take a look at gmpy and the is_power function. I think it will do exactly what you want. http://code.google.com/p/gmpy/ casevh -- http://mail.python.org/mailman/listinfo/python-list
