Q: What are the prime factors of the number 12,816,748?

 A: 2, 7, 397, 1153

Why are those the prime factors of the number 12,816,748?

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 12,816,748

12,816,748
Factor Arrows
26,408,374
Factor Arrows
23,204,187
Factor Arrows
7457,741
Factor Arrows
3971,153

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, 7, 397, 1153

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 397 x 1,153 = 12,816,748

This can also be written as 22 x 71 x 3971 x 1,1531 = 12,816,748

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


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