Q: What are the prime factors of the number 440,431,400?

 A: 2, 5, 19, 115903

Why are those the prime factors of the number 440,431,400?

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 440,431,400

440,431,400
Factor Arrows
2220,215,700
Factor Arrows
2110,107,850
Factor Arrows
255,053,925
Factor Arrows
511,010,785
Factor Arrows
52,202,157
Factor Arrows
19115,903

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, 19, 115903

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 19 x 115,903 = 440,431,400

This can also be written as 23 x 52 x 191 x 115,9031 = 440,431,400

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


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