Q: What are the prime factors of the number 258,489?

 A: 3, 7, 11, 373

Why are those the prime factors of the number 258,489?

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 258,489

258,489
Factor Arrows
386,163
Factor Arrows
328,721
Factor Arrows
74,103
Factor Arrows
11373

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, 7, 11, 373

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 11 x 373 = 258,489

This can also be written as 32 x 71 x 111 x 3731 = 258,489

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


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