Math Tutor Explains: What is 21 to the Power of 74?

A math tutor would explain that to solve for 21 to the power of 74, we must first understand the structure. The number 21 is called the base, and the number 74 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: 21 to the Power of 74 is equal to 69859875979484524441874660534191358103768455483109907560293283890555986111397181328318514488633881

Methods

Step-by-step from math tutor: finding 21 to the power of 74

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:

217421^{74}

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

21 x 21 x 21 x 21 x ... (for a total of 74 times) = 69859875979484524441874660534191358103768455483109907560293283890555986111397181328318514488633881

Therefore, 21 to the power of 74 is 69859875979484524441874660534191358103768455483109907560293283890555986111397181328318514488633881.

Math Tutor Suggests: Try related exponent problems

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

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