Q: What are the prime factors of the number 12,374,240?

 A: 2, 5, 77339

Why are those the prime factors of the number 12,374,240?

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 12,374,240

12,374,240
Factor Arrows
26,187,120
Factor Arrows
23,093,560
Factor Arrows
21,546,780
Factor Arrows
2773,390
Factor Arrows
2386,695
Factor Arrows
577,339

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, 77339

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 77,339 = 12,374,240

This can also be written as 25 x 51 x 77,3391 = 12,374,240

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


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