Q: What are the prime factors of the number 405,436,612?

 A: 2, 7, 337, 42967

Why are those the prime factors of the number 405,436,612?

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 405,436,612

405,436,612
Factor Arrows
2202,718,306
Factor Arrows
2101,359,153
Factor Arrows
714,479,879
Factor Arrows
33742,967

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, 7, 337, 42967

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 337 x 42,967 = 405,436,612

This can also be written as 22 x 71 x 3371 x 42,9671 = 405,436,612

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


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