Q: What are the prime factors of the number 86,015,888?

 A: 2, 7, 19, 83, 487

Why are those the prime factors of the number 86,015,888?

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 86,015,888

86,015,888
Factor Arrows
243,007,944
Factor Arrows
221,503,972
Factor Arrows
210,751,986
Factor Arrows
25,375,993
Factor Arrows
7767,999
Factor Arrows
1940,421
Factor Arrows
83487

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, 7, 19, 83, 487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 19 x 83 x 487 = 86,015,888

This can also be written as 24 x 71 x 191 x 831 x 4871 = 86,015,888

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


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