Q: What are the prime factors of the number 18,238,896?

 A: 2, 3, 13, 9743

Why are those the prime factors of the number 18,238,896?

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 18,238,896

18,238,896
Factor Arrows
29,119,448
Factor Arrows
24,559,724
Factor Arrows
22,279,862
Factor Arrows
21,139,931
Factor Arrows
3379,977
Factor Arrows
3126,659
Factor Arrows
139,743

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, 9743

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 13 x 9,743 = 18,238,896

This can also be written as 24 x 32 x 131 x 9,7431 = 18,238,896

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


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