Q: What are the prime factors of the number 380,736?

 A: 2, 3, 661

Why are those the prime factors of the number 380,736?

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 380,736

380,736
Factor Arrows
2190,368
Factor Arrows
295,184
Factor Arrows
247,592
Factor Arrows
223,796
Factor Arrows
211,898
Factor Arrows
25,949
Factor Arrows
31,983
Factor Arrows
3661

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, 661

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 661 = 380,736

This can also be written as 26 x 32 x 6611 = 380,736

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


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