Q: What are the prime factors of the number 22,021,664?

 A: 2, 7, 17, 5783

Why are those the prime factors of the number 22,021,664?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 22,021,664

22,021,664
Factor Arrows
211,010,832
Factor Arrows
25,505,416
Factor Arrows
22,752,708
Factor Arrows
21,376,354
Factor Arrows
2688,177
Factor Arrows
798,311
Factor Arrows
175,783

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 17, 5783

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 5,783 = 22,021,664

This can also be written as 25 x 71 x 171 x 5,7831 = 22,021,664

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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