Q: What are the prime factors of the number 477,440?

 A: 2, 5, 373

Why are those the prime factors of the number 477,440?

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 477,440

477,440
Factor Arrows
2238,720
Factor Arrows
2119,360
Factor Arrows
259,680
Factor Arrows
229,840
Factor Arrows
214,920
Factor Arrows
27,460
Factor Arrows
23,730
Factor Arrows
21,865
Factor Arrows
5373

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, 5, 373

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 2 x 2 x 5 x 373 = 477,440

This can also be written as 28 x 51 x 3731 = 477,440

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


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