Q: What are the prime factors of the number 875,205?

 A: 3, 5, 2161

Why are those the prime factors of the number 875,205?

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 875,205

875,205
Factor Arrows
3291,735
Factor Arrows
397,245
Factor Arrows
332,415
Factor Arrows
310,805
Factor Arrows
52,161

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, 2161

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 2,161 = 875,205

This can also be written as 34 x 51 x 2,1611 = 875,205

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


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