Q: What are the prime factors of the number 3,117,664?

 A: 2, 11, 17, 521

Why are those the prime factors of the number 3,117,664?

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 3,117,664

3,117,664
Factor Arrows
21,558,832
Factor Arrows
2779,416
Factor Arrows
2389,708
Factor Arrows
2194,854
Factor Arrows
297,427
Factor Arrows
118,857
Factor Arrows
17521

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, 11, 17, 521

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 17 x 521 = 3,117,664

This can also be written as 25 x 111 x 171 x 5211 = 3,117,664

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


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 3,117,664:


Ask a Question