A specific value of the Ackermann function

[bo198214]

I think this is a board to be read slowly and with pen and paper to hand (unless you're a mathematics genius, which I'm not).

At least I expect that one is willing to deal with the question. As opposed to an "serve me" attitude.

As a first observation, it's the sheer size of the numbers obtained by tetration and other hyperoperators that attracts me to the topic.

Then you probably already read, what Robert Munafo has to say about the topic:
http://www.mrob.com/pub/math/largenum.html