Q: What are the prime factors of the number 3,193,920?

 A: 2, 3, 5, 1109

Why are those the prime factors of the number 3,193,920?

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 3,193,920

3,193,920
Factor Arrows
21,596,960
Factor Arrows
2798,480
Factor Arrows
2399,240
Factor Arrows
2199,620
Factor Arrows
299,810
Factor Arrows
249,905
Factor Arrows
316,635
Factor Arrows
35,545
Factor Arrows
51,109

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, 5, 1109

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 3 x 3 x 5 x 1,109 = 3,193,920

This can also be written as 26 x 32 x 51 x 1,1091 = 3,193,920

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 3,193,920:


Ask a Question