Ok so to get to Graham's number we need to intoduce two systems of notation above Exponentiation: the Knuth's up-arrow notation, and the g function.

To get to TREE(3) lower bound, we need to inroduce two more systems of notations.

So if Graham's number is L3, and TREE(3) is L5, where would TREE(4) or SSCG(3) fall? Or are they so large they would essentially be L(TREE(4)) and L(SSCG(3))