Also on the fourth i only managed to calculate 4^4^4 because the one more ^4 results in break, and the result of the 4^4^4 is abt 10^154 (bro 4^(10^154) is insane)

Thats tetration

2^2 = 2^^2

3^3^3 = 3^^3

4^4^4^4 = 4^^4

(But I never knew 4^4^4^4 is larger than a googol tho)