You may have had your fun with math flipping 5318008 in a calculator, or seen curvy lines that resemble flipped 5318008,
But have you ever wondered about big numbers?

Stop here for a second, and try to write down the largest number that comes to your mind.

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In about 15 minutes, you’ll probably be laughing at yourself. Maybe not, if you’re a mathematician.

Here is a post from WaitButWhy, where Tim Urban inexplicably puts Graham’s number into context.
I’ve read it a few times, and I can’t even remotely guess how Graham got to this number when working on a problem.

It gets better when you find a youtuber telling a 17 minute educational story about Graham's number just so he can finish off with a joke.

If you’ve got this far, you may also want to look at some other unfathomably large numbers.