Press space to start. Turn on turbo mode to get it done faster. For people who put in large numbers: it takes a while for the program to process all of the numbers so just wait patiently.
Thank you @leszpio for the prime factorization program: https://scratch.mit.edu/projects/2900844/ (Percent finished does not show. 100% means that all duplicated prime factors are removed and it is finished) duplicated prime factors are now deleted. Bug fixed :D
