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:
73 x 73 x 73 x 73 x ... (for a total of 91 times) = 36507346762698022672229947186425564061671647922171034852241452332588206602097091150839365421846414898500447897136445343628072917352273365998214114455637040252668778245977
Therefore, 73 to the power of 91 is 36507346762698022672229947186425564061671647922171034852241452332588206602097091150839365421846414898500447897136445343628072917352273365998214114455637040252668778245977.