The first step is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.
The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be
So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:
To simplify this, all that is needed is to multiply it out:
85 x 85 x 85 x 85 x ... (for a total of 91 times) = 37767848037391182224495746289294198755795582119720404830725933161995819009706532440762364325859038273150901595083974772961353255577962757805199345284563605673611164093017578125
Therefore, 85 to the power of 91 is 37767848037391182224495746289294198755795582119720404830725933161995819009706532440762364325859038273150901595083974772961353255577962757805199345284563605673611164093017578125.