Q: What are the prime factors of the number 28,551,042?

 A: 2, 3, 13, 4519

Why are those the prime factors of the number 28,551,042?

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 28,551,042

28,551,042
Factor Arrows
214,275,521
Factor Arrows
34,758,507
Factor Arrows
31,586,169
Factor Arrows
3528,723
Factor Arrows
3176,241
Factor Arrows
358,747
Factor Arrows
134,519

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, 4519

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 13 x 4,519 = 28,551,042

This can also be written as 21 x 35 x 131 x 4,5191 = 28,551,042

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


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