View Single Post
Old 2004-01-27, 17:21   #16
ewmayer's Avatar
Sep 2002
Rep├║blica de California

7·11·151 Posts

Originally Posted by andi314
so which other methods could i use to determine that a number is 100% prime???
For numbers having no special form, there are a number of algorithms you could try, e.g. APRCL (named after its inventors), ECPP, or the recent deterministic AKS algorithm. Do a Google search on any of these and you'll find background info and in most case freeware implementations. The practical limit of these seems to be 5000-10000 digits at present - proving any number < 100 digits or so would be virtually instantaneous via these methods.
ewmayer is offline   Reply With Quote