User blog comment:Meowzz/TREE(3) vs SCG(2) which is bigger?/@comment-11227630-20180322052213/@comment-11227630-20180322145101

The lower bound of n that TREE(n) > SCG(n) is very close to (but less than) SCG(3).

Similarly, the lower bound of n that 10^^n > G (G = Graham's number) is very close to (but less than) G.