Charinchar

Charinchar is a number calculated in X-Sequence Nested Exponential Notation. It is the 4th biggest number ever made by X-Sequence Nested Exponential Notation. It is below:

$$10\{M(G(G_{I(1,0)}(0))\}10 = Charinchar$$

By now, even the Fast Growing Hierarchy is struggling to keep up!

Approximations in other notations: