Q: What are the prime factors of the number 18,203,584?

 A: 2, 7, 179, 227

Why are those the prime factors of the number 18,203,584?

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 18,203,584

18,203,584
Factor Arrows
29,101,792
Factor Arrows
24,550,896
Factor Arrows
22,275,448
Factor Arrows
21,137,724
Factor Arrows
2568,862
Factor Arrows
2284,431
Factor Arrows
740,633
Factor Arrows
179227

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, 179, 227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 179 x 227 = 18,203,584

This can also be written as 26 x 71 x 1791 x 2271 = 18,203,584

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


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