Q: What are the prime factors of the number 133,020?

 A: 2, 3, 5, 739

Why are those the prime factors of the number 133,020?

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 133,020

133,020
Factor Arrows
266,510
Factor Arrows
233,255
Factor Arrows
311,085
Factor Arrows
33,695
Factor Arrows
5739

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, 739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 739 = 133,020

This can also be written as 22 x 32 x 51 x 7391 = 133,020

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


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