Hi! i need help "exponentiating" large numbers

example:

23207^15416416416464164341748987897644644556446434 643364167389234432442364234531

or, in general:

some number^(some really large number)

and i need the entire value so i can mod it properly.

i know that there are ways of doing it, but i dont understand any of them. can someone tell me how to do it without all sorts of greek letters?

Thanks!

yes, this is about the RSA algorithm...