Q: What are the prime factors of the number 85,713,180?

 A: 2, 3, 5, 7, 19, 23, 467

Why are those the prime factors of the number 85,713,180?

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 85,713,180

85,713,180
Factor Arrows
242,856,590
Factor Arrows
221,428,295
Factor Arrows
37,142,765
Factor Arrows
51,428,553
Factor Arrows
7204,079
Factor Arrows
1910,741
Factor Arrows
23467

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, 19, 23, 467

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 19 x 23 x 467 = 85,713,180

This can also be written as 22 x 31 x 51 x 71 x 191 x 231 x 4671 = 85,713,180

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


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