Q: What are the prime factors of the number 403,442,130?

 A: 2, 3, 5, 7, 13, 17, 8693

Why are those the prime factors of the number 403,442,130?

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 403,442,130

403,442,130
Factor Arrows
2201,721,065
Factor Arrows
367,240,355
Factor Arrows
513,448,071
Factor Arrows
71,921,153
Factor Arrows
13147,781
Factor Arrows
178,693

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, 5, 7, 13, 17, 8693

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 13 x 17 x 8,693 = 403,442,130

This can also be written as 21 x 31 x 51 x 71 x 131 x 171 x 8,6931 = 403,442,130

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


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