User blog comment:Mango523WNR/I Have A question/@comment-29065906-20190816081315

The G function grows at \(f_{\omega+1}(n)\), so g128 is \(f_{\omega+1}(128)\)

g128 is also 3↑↑↑↑.....↑↑↑↑3 with g127 arrows

And that is obviously bigger than g64^^^g64, because the more arrows the bigger the number is

This means that the smallest is g64^^^g64

The tree function grows at \(f_{\vartheta(\Omega^\omega\omega)}(n)\), which is FAR FAR FAR larger than \(f_{\omega+1}(n)\)

There's your answer