Q: What are the prime factors of the number 377,328?

 A: 2, 3, 7, 1123

Why are those the prime factors of the number 377,328?

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 377,328

377,328
Factor Arrows
2188,664
Factor Arrows
294,332
Factor Arrows
247,166
Factor Arrows
223,583
Factor Arrows
37,861
Factor Arrows
71,123

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, 7, 1123

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 1,123 = 377,328

This can also be written as 24 x 31 x 71 x 1,1231 = 377,328

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


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