Q: What are the prime factors of the number 123,591,616?

 A: 2, 557, 3467

Why are those the prime factors of the number 123,591,616?

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 123,591,616

123,591,616
Factor Arrows
261,795,808
Factor Arrows
230,897,904
Factor Arrows
215,448,952
Factor Arrows
27,724,476
Factor Arrows
23,862,238
Factor Arrows
21,931,119
Factor Arrows
5573,467

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, 557, 3467

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 557 x 3,467 = 123,591,616

This can also be written as 26 x 5571 x 3,4671 = 123,591,616

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


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