Q: What are the prime factors of the number 86,511,328?

 A: 2, 31, 37, 2357

Why are those the prime factors of the number 86,511,328?

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 86,511,328

86,511,328
Factor Arrows
243,255,664
Factor Arrows
221,627,832
Factor Arrows
210,813,916
Factor Arrows
25,406,958
Factor Arrows
22,703,479
Factor Arrows
3187,209
Factor Arrows
372,357

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, 31, 37, 2357

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 31 x 37 x 2,357 = 86,511,328

This can also be written as 25 x 311 x 371 x 2,3571 = 86,511,328

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


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