It's currently running Kilminster's PRIMEGAME program What Turing-complete system should I make next? I can obviously make it accept user input, but the user cannot state the condition when n is being output, and in which format. Conway's PRIMEGAME program uses powers of 2, but this version uses powers of 10.
One thing that seperated this from the rest is the fact that it uses a different technique which allowed massive numbers without overflowing. I also made one in desmos! check it out: https://www.desmos.com/calculator/oqlwz97zxt Gosh do I like Conway