Q: What are the prime factors of the number 18,006,180?

 A: 2, 3, 5, 73, 4111

Why are those the prime factors of the number 18,006,180?

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 18,006,180

18,006,180
Factor Arrows
29,003,090
Factor Arrows
24,501,545
Factor Arrows
31,500,515
Factor Arrows
5300,103
Factor Arrows
734,111

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, 5, 73, 4111

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 73 x 4,111 = 18,006,180

This can also be written as 22 x 31 x 51 x 731 x 4,1111 = 18,006,180

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


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