Q: What are the prime factors of the number 28,559,025?

 A: 3, 5, 11, 1049

Why are those the prime factors of the number 28,559,025?

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 28,559,025

28,559,025
Factor Arrows
39,519,675
Factor Arrows
33,173,225
Factor Arrows
5634,645
Factor Arrows
5126,929
Factor Arrows
1111,539
Factor Arrows
111,049

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:

3, 5, 11, 1049

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 11 x 11 x 1,049 = 28,559,025

This can also be written as 32 x 52 x 112 x 1,0491 = 28,559,025

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


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