User blog comment:MachineGunSuper/Googolpie/@comment-25337554-20171202100029/@comment-30754445-20171202154717

Agreed on all counts, including your generousity. Looking at it for a couple of minutes I see nothing with the power of pentation. It's just repeated factorials, without any recursion.

And while doing an exact estimation of these things might have been fun the first time, it's getting really tedious by the 10th time. Especially given the smallish size of the resulting number... why waste our time?