Q: What are the prime factors of the number 401,431,012?

 A: 2, 19, 743, 7109

Why are those the prime factors of the number 401,431,012?

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 401,431,012

401,431,012
Factor Arrows
2200,715,506
Factor Arrows
2100,357,753
Factor Arrows
195,281,987
Factor Arrows
7437,109

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, 19, 743, 7109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 19 x 743 x 7,109 = 401,431,012

This can also be written as 22 x 191 x 7431 x 7,1091 = 401,431,012

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


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