Don't worry, I didn't even know about programming in 2018. I am sure I'll see a Staff Pick on your community post soon :)

What???

running it on a Linux machine I was able to do it using 400Kb of memory instead of 4Gb.

I’m hoping that someone from Wolfram Research looks at your code and implementation to see what could cause such a dramatic difference! A factor of 1000 is memory usage is simply unacceptable!

Thank you very much for sharing this interesting approach! I can't wait trying it. And:

... running it on a Linux machine I was able to do it using 400Kb of memory instead of 4Gb.

Yes - this is a good point and important to mention! I always advocate Linux.