User blog comment:Ikosarakt1/Leading digits of googolgong factorial/@comment-5529393-20130316233046/@comment-5529393-20130318191642

Heh. Well, the digits don't need to be stored in RAM, you can store them on hard drive and  load them as needed. The guy who computed 10 trillion digits of pi did so on a PC with I think 96GB RAM and 48TB hard drive space. Computing 3^^4 is easier than computing 3.6 trillion digits of pi. I imagine 10GB of RAM and 10TB of hard drive space would be enough, and it would take a few weeks to run. Probably no one will do it for a while, since 3^^4 doesn't have the allure of pi :P