Q: What are the prime factors of the number 133,301,340?

 A: 2, 3, 5, 19, 38977

Why are those the prime factors of the number 133,301,340?

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 133,301,340

133,301,340
Factor Arrows
266,650,670
Factor Arrows
233,325,335
Factor Arrows
311,108,445
Factor Arrows
33,702,815
Factor Arrows
5740,563
Factor Arrows
1938,977

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, 19, 38977

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 19 x 38,977 = 133,301,340

This can also be written as 22 x 32 x 51 x 191 x 38,9771 = 133,301,340

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


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