RE: nth root

[Tim Roberts]

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
 
 
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