The first step a math tutor would suggest 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 66 times) = 1980304129918989535697731075496074648229551800621327444221804431266702112501621985456541895934491267104891134083202975276250820441
Therefore, 91 to the power of 66 is 1980304129918989535697731075496074648229551800621327444221804431266702112501621985456541895934491267104891134083202975276250820441.