Forum:Trying to Calculate a Number Outside of my Comfortable Range

So, I decided to try figuring out that, assuming there's a multiverse, and that the Many Worlds Interpretation is true, and that the number of both parallel universes and alternate timelines double every planck time, what the minimum number of Universes would be.

If I'm not mistaken, this is the formula for the above: (1,855e+043*2)^(4,320432e+017*2), with the former being the number of planck times in a second times two, and the latter being the number of seconds in 13.7 billion years times two.

Would anyone mind solving for it? My limit is a million digits, and this is, well... ...a lot more.

Is it even possible to solve, or is it one of THOSE numbers?