FactorPad 0.1
(Edit)This application finds the prime factorization of integers. Great for parties! Everyone loves number theory. It's free, and you can download it as a zip archive now.
FactorPad was written as a side-effect of trying to learn the basics of programming for the Palm OS. Didn't come out too badly for a contrived problem. It will accept integers having up to 9 digits.