Prime Derivatives Cost: $9.95 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Prime Derivatives: This attractive, handy little prime number calculator takes any number up to twenty digits, and then factorizes all the unique prime numbers that evenly divide into the number that was entered into the field. It's small enough to neatly fit in the corner of your monitor while you easily factorize the numbers you need for that school or office assignment.