Q: What are the prime factors of the number 12,855,072?

 A: 2, 3, 359, 373

Why are those the prime factors of the number 12,855,072?

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 12,855,072

12,855,072
Factor Arrows
26,427,536
Factor Arrows
23,213,768
Factor Arrows
21,606,884
Factor Arrows
2803,442
Factor Arrows
2401,721
Factor Arrows
3133,907
Factor Arrows
359373

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, 359, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 359 x 373 = 12,855,072

This can also be written as 25 x 31 x 3591 x 3731 = 12,855,072

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


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