Q: What are the prime factors of the number 13,406,976?

 A: 2, 3, 11, 23

Why are those the prime factors of the number 13,406,976?

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 13,406,976

13,406,976
Factor Arrows
26,703,488
Factor Arrows
23,351,744
Factor Arrows
21,675,872
Factor Arrows
2837,936
Factor Arrows
2418,968
Factor Arrows
2209,484
Factor Arrows
2104,742
Factor Arrows
252,371
Factor Arrows
317,457
Factor Arrows
35,819
Factor Arrows
11529
Factor Arrows
2323

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, 11, 23

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 2 x 2 x 3 x 3 x 11 x 23 x 23 = 13,406,976

This can also be written as 28 x 32 x 111 x 232 = 13,406,976

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 13,406,976:


Ask a Question