Q: What are the prime factors of the number 22,172,892?

 A: 2, 3, 7, 5387

Why are those the prime factors of the number 22,172,892?

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 22,172,892

22,172,892
Factor Arrows
211,086,446
Factor Arrows
25,543,223
Factor Arrows
31,847,741
Factor Arrows
7263,963
Factor Arrows
737,709
Factor Arrows
75,387

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, 3, 7, 5387

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 7 x 5,387 = 22,172,892

This can also be written as 22 x 31 x 73 x 5,3871 = 22,172,892

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


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