Q: What are the prime factors of the number 131,232,123?

 A: 3, 11, 40169

Why are those the prime factors of the number 131,232,123?

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 131,232,123

131,232,123
Factor Arrows
343,744,041
Factor Arrows
314,581,347
Factor Arrows
34,860,449
Factor Arrows
11441,859
Factor Arrows
1140,169

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:

3, 11, 40169

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 11 x 11 x 40,169 = 131,232,123

This can also be written as 33 x 112 x 40,1691 = 131,232,123

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


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