Power towers, known more formally as tetration, is the mathematical operation of taking exponents to the powers of exponents. In the simplest example:
222
Which simplifies to:
24 = 16
Power towers can be of any arbitrary height but they tend to quickly exceed what is expressible in standard decimal notation:
3333
3327
37,625,597,484,987
The full decimal expansion would take over a trillion characters to represent and write-ups can't be more than 65535 characters long so I can't give it to you but you get the picture. Power towers can be represented with arrow notion as a^^b where "a" is the number in the tower and "b" is the height of the tower. The two above examples would be 2^^3 and 3^^4 respectively. For a more general explanation on how to construct large, powerful numbers read hyper operator.
IRON NODER: TOKYO DRIFT