Q: What are the prime factors of the number 12,128,337?

 A: 3, 13, 23, 4507

Why are those the prime factors of the number 12,128,337?

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 12,128,337

12,128,337
Factor Arrows
34,042,779
Factor Arrows
31,347,593
Factor Arrows
13103,661
Factor Arrows
234,507

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, 13, 23, 4507

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 23 x 4,507 = 12,128,337

This can also be written as 32 x 131 x 231 x 4,5071 = 12,128,337

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


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