Q: What are the prime factors of the number 474,144?

 A: 2, 3, 11, 449

Why are those the prime factors of the number 474,144?

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 474,144

474,144
Factor Arrows
2237,072
Factor Arrows
2118,536
Factor Arrows
259,268
Factor Arrows
229,634
Factor Arrows
214,817
Factor Arrows
34,939
Factor Arrows
11449

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, 11, 449

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 11 x 449 = 474,144

This can also be written as 25 x 31 x 111 x 4491 = 474,144

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


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