https://github.com/bosons-riemann/riemann is the recursive version of the code for ease of understanding. this can factorize any number on earth in acceptable amounts of time provided your machine stacklimit allows

https://github.com/bosons-riemann/kosen-rufu (branch: laptop) can factorize any number on earth on a simple laptop running redis server.

sharing the complete code , just in case somebody wants to use it and I am not around

This version of the code can truly run on a laptop

https://github.com/bosons-riemann/riemann/wiki/Integer-Facto...

is a short writeup of the logic behind the code if you are interested.