paraparapara, shortened to p3, is a parasitic number finder
parasitic numbers are numbers that when you multiply it by n, it shifts the last letter to the front
for example, 102564 * 4 is 410256, hence 102565 is a 4-parasitic number
see its git repo here
you can download the source code at the repo, or download exectuables by clicking this link for windows, and here for linux
note these binaries are for x86 cpus