>factorials than the older 85. If you have an 85 and an 86, try >evaluating 449! at the same time on both calculators. The 86 gives back >an answer almost instantly, while the 85 takes a few seconds. Does the >86 use a different way to computer factorials? The 85 and 86 don't have very good memory management so as the memory gets fuller, the calc slows down. This doesn't happen on the 82/3.