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:
91 x 91 x 91 x 91 x ... (for a total of 68 times) = 16398898499859152345112911036182994161988918460945212565600762495319560193625931661565623440233522182895603481343003838262633044071921
Therefore, 91 to the power of 68 is 16398898499859152345112911036182994161988918460945212565600762495319560193625931661565623440233522182895603481343003838262633044071921.