Q: What are the prime factors of the number 764,832,180?

 A: 2, 3, 5, 7, 37, 79, 89

Why are those the prime factors of the number 764,832,180?

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 764,832,180

764,832,180
Factor Arrows
2382,416,090
Factor Arrows
2191,208,045
Factor Arrows
363,736,015
Factor Arrows
512,747,203
Factor Arrows
71,821,029
Factor Arrows
7260,147
Factor Arrows
377,031
Factor Arrows
7989

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, 7, 37, 79, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 7 x 37 x 79 x 89 = 764,832,180

This can also be written as 22 x 31 x 51 x 72 x 371 x 791 x 891 = 764,832,180

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


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