How to multiply 21 by itself 4 times

How to multiply 21 by itself 4 times. In other words, what is 21 multiplied by itself 4 times?

To multiply 21 by itself 4 times is the same as 21 to the power of 4 (21^4) or twenty-one to the fourth power. Specifically, 21 is the base and 4 is the exponent like this:

21⁴

21⁴ is 21 multiplied by itself 4 times which is 21 × 21 × 21 × 21.

Here is how we calculate it:

21
21 × 21 = 441
441 × 21 = 9261
9261 × 21 = 194481

That is it! Now you know how to multiply 21 by itself 4 times.

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