Q: What are the prime factors of the number 3,117,792?

 A: 2, 3, 47, 691

Why are those the prime factors of the number 3,117,792?

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 3,117,792

3,117,792
Factor Arrows
21,558,896
Factor Arrows
2779,448
Factor Arrows
2389,724
Factor Arrows
2194,862
Factor Arrows
297,431
Factor Arrows
332,477
Factor Arrows
47691

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, 47, 691

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 47 x 691 = 3,117,792

This can also be written as 25 x 31 x 471 x 6911 = 3,117,792

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


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