Q: What are the prime factors of the number 11,729,610?

 A: 2, 3, 5, 1609

Why are those the prime factors of the number 11,729,610?

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 11,729,610

11,729,610
Factor Arrows
25,864,805
Factor Arrows
31,954,935
Factor Arrows
3651,645
Factor Arrows
3217,215
Factor Arrows
372,405
Factor Arrows
324,135
Factor Arrows
38,045
Factor Arrows
51,609

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, 5, 1609

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 1,609 = 11,729,610

This can also be written as 21 x 36 x 51 x 1,6091 = 11,729,610

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


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