Math Tutor Explains: What is 91 to the Power of 99?

A math tutor would explain that to solve for 91 to the power of 99, we must first understand the structure. The number 91 is called the base, and the number 99 is called the exponent. In short, the base must be multiplied by itself the number of times as the exponent. Let’s look at this problem in more detail.

Math Tutor's Solution: 91 to the Power of 99 is equal to 88124738196783855843715834300061593127759322221053842036217020297639648291280638476186739714191648523786568750073862773678799800421661224222197491094402641857955661144715752647446155970953183011

Methods

Step-by-step from math tutor: finding 91 to the power of 99

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

242^4
. To solve this, we need to multiply the base, 2 by itself, 4 times -
2⋅2⋅2⋅22\cdot2\cdot2\cdot2
= 16. So
24=162^4 = 16
.

So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:

919991^{99}

To simplify this, all that is needed is to multiply it out:

91 x 91 x 91 x 91 x ... (for a total of 99 times) = 88124738196783855843715834300061593127759322221053842036217020297639648291280638476186739714191648523786568750073862773678799800421661224222197491094402641857955661144715752647446155970953183011

Therefore, 91 to the power of 99 is 88124738196783855843715834300061593127759322221053842036217020297639648291280638476186739714191648523786568750073862773678799800421661224222197491094402641857955661144715752647446155970953183011.

Math Tutor Suggests: Try related exponent problems

Our math tutors suggest reviewing other exponent problems that you can practice with!

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