Enter a number and see if it is a prime number or not. If the number is not a prime number, Scratch Cat will show you its factors! Numbers larger than 19,500,000 will take over a min to check. Numbers larger than that will take even more time! There is a loading screen sort of thing for this reason: Lists can take up only around 500,000 items a second... I think. so it would take 2 seconds to get a number that is about one million. The larger the number, the longer it takes; hence the loading screen. Numbers from 1-150,000 load instantly
