Q: What are the prime factors of the number 380,988?

 A: 2, 3, 19, 557

Why are those the prime factors of the number 380,988?

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 380,988

380,988
Factor Arrows
2190,494
Factor Arrows
295,247
Factor Arrows
331,749
Factor Arrows
310,583
Factor Arrows
19557

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, 19, 557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 19 x 557 = 380,988

This can also be written as 22 x 32 x 191 x 5571 = 380,988

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


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