Q: What are the prime factors of the number 411,581,742?

 A: 2, 3, 11, 13, 43609

Why are those the prime factors of the number 411,581,742?

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 411,581,742

411,581,742
Factor Arrows
2205,790,871
Factor Arrows
368,596,957
Factor Arrows
116,236,087
Factor Arrows
11566,917
Factor Arrows
1343,609

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, 11, 13, 43609

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 11 x 13 x 43,609 = 411,581,742

This can also be written as 21 x 31 x 112 x 131 x 43,6091 = 411,581,742

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


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