Q: What are the prime factors of the number 18,066,672?

 A: 2, 3, 13, 3217

Why are those the prime factors of the number 18,066,672?

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 18,066,672

18,066,672
Factor Arrows
29,033,336
Factor Arrows
24,516,668
Factor Arrows
22,258,334
Factor Arrows
21,129,167
Factor Arrows
3376,389
Factor Arrows
3125,463
Factor Arrows
341,821
Factor Arrows
133,217

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, 13, 3217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 13 x 3,217 = 18,066,672

This can also be written as 24 x 33 x 131 x 3,2171 = 18,066,672

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


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