Q: What are the prime factors of the number 18,259,120?

 A: 2, 5, 11, 20749

Why are those the prime factors of the number 18,259,120?

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 18,259,120

18,259,120
Factor Arrows
29,129,560
Factor Arrows
24,564,780
Factor Arrows
22,282,390
Factor Arrows
21,141,195
Factor Arrows
5228,239
Factor Arrows
1120,749

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, 5, 11, 20749

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 20,749 = 18,259,120

This can also be written as 24 x 51 x 111 x 20,7491 = 18,259,120

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


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