Q: What are the prime factors of the number 12,718,528?

 A: 2, 37, 41, 131

Why are those the prime factors of the number 12,718,528?

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 12,718,528

12,718,528
Factor Arrows
26,359,264
Factor Arrows
23,179,632
Factor Arrows
21,589,816
Factor Arrows
2794,908
Factor Arrows
2397,454
Factor Arrows
2198,727
Factor Arrows
375,371
Factor Arrows
41131

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, 37, 41, 131

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 37 x 41 x 131 = 12,718,528

This can also be written as 26 x 371 x 411 x 1311 = 12,718,528

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


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