Q: What are the prime factors of the number 20,167,200?

 A: 2, 3, 5, 2801

Why are those the prime factors of the number 20,167,200?

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 20,167,200

20,167,200
Factor Arrows
210,083,600
Factor Arrows
25,041,800
Factor Arrows
22,520,900
Factor Arrows
21,260,450
Factor Arrows
2630,225
Factor Arrows
3210,075
Factor Arrows
370,025
Factor Arrows
514,005
Factor Arrows
52,801

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, 5, 2801

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 2,801 = 20,167,200

This can also be written as 25 x 32 x 52 x 2,8011 = 20,167,200

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


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