Q: What are the prime factors of the number 12,538,660?

 A: 2, 5, 47, 13339

Why are those the prime factors of the number 12,538,660?

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 12,538,660

12,538,660
Factor Arrows
26,269,330
Factor Arrows
23,134,665
Factor Arrows
5626,933
Factor Arrows
4713,339

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, 5, 47, 13339

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 47 x 13,339 = 12,538,660

This can also be written as 22 x 51 x 471 x 13,3391 = 12,538,660

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


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