Q: What are the prime factors of the number 3,249,072?

 A: 2, 3, 23, 109

Why are those the prime factors of the number 3,249,072?

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 3,249,072

3,249,072
Factor Arrows
21,624,536
Factor Arrows
2812,268
Factor Arrows
2406,134
Factor Arrows
2203,067
Factor Arrows
367,689
Factor Arrows
322,563
Factor Arrows
37,521
Factor Arrows
32,507
Factor Arrows
23109

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, 23, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 23 x 109 = 3,249,072

This can also be written as 24 x 34 x 231 x 1091 = 3,249,072

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 3,249,072:


Ask a Question