Elon Musk tweeted about Graham's number the other day. (
Elon Musk on Twitter)
But just this snippet from Wikipedia is quite revealing:
"Graham's number is.... so large that the
observable universe is far too small to contain an ordinary
digital representation of Graham's number, assuming that each digit occupies one
Planck volume, possibly the smallest measurable space. But even the number of digits in this digital representation of Graham's number would itself be a number so large that its digital representation cannot be represented in the observable universe. Nor even can the number of digits of
that number—and so forth, for a number of times far exceeding the total number of Planck volumes in the observable universe."
Graham's number - Wikipedia
That's really large folks! What business do mortals have tinkering with such numbers? They are meant for the realms of gods and angels and other immortals.