Q: What are the prime factors of the number 85,508,360?

 A: 2, 5, 7, 19, 16073

Why are those the prime factors of the number 85,508,360?

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 85,508,360

85,508,360
Factor Arrows
242,754,180
Factor Arrows
221,377,090
Factor Arrows
210,688,545
Factor Arrows
52,137,709
Factor Arrows
7305,387
Factor Arrows
1916,073

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, 5, 7, 19, 16073

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 19 x 16,073 = 85,508,360

This can also be written as 23 x 51 x 71 x 191 x 16,0731 = 85,508,360

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


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