Q: What are the prime factors of the number 91,388,328?

 A: 2, 3, 17, 19, 11789

Why are those the prime factors of the number 91,388,328?

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 91,388,328

91,388,328
Factor Arrows
245,694,164
Factor Arrows
222,847,082
Factor Arrows
211,423,541
Factor Arrows
33,807,847
Factor Arrows
17223,991
Factor Arrows
1911,789

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, 17, 19, 11789

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 17 x 19 x 11,789 = 91,388,328

This can also be written as 23 x 31 x 171 x 191 x 11,7891 = 91,388,328

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


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