Q: What are the prime factors of the number 400,423,752?

 A: 2, 3, 5561441

Why are those the prime factors of the number 400,423,752?

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 400,423,752

400,423,752
Factor Arrows
2200,211,876
Factor Arrows
2100,105,938
Factor Arrows
250,052,969
Factor Arrows
316,684,323
Factor Arrows
35,561,441

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, 5561441

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5,561,441 = 400,423,752

This can also be written as 23 x 32 x 5,561,4411 = 400,423,752

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


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