Q: What are the prime factors of the number 133,272?

 A: 2, 3, 617

Why are those the prime factors of the number 133,272?

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 133,272

133,272
Factor Arrows
266,636
Factor Arrows
233,318
Factor Arrows
216,659
Factor Arrows
35,553
Factor Arrows
31,851
Factor Arrows
3617

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, 617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 617 = 133,272

This can also be written as 23 x 33 x 6171 = 133,272

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


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