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:
39 x 39 x 39 x 39 x ... (for a total of 99 times) = 32763938014191515983915057565440373315630072967930053988051681299242249635094695516502279814204752646395532051267410325470715517978105545952211618333957618359
Therefore, 39 to the power of 99 is 32763938014191515983915057565440373315630072967930053988051681299242249635094695516502279814204752646395532051267410325470715517978105545952211618333957618359.