Q: What are the prime factors of the number 807,660?

 A: 2, 3, 5, 7, 641

Why are those the prime factors of the number 807,660?

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 807,660

807,660
Factor Arrows
2403,830
Factor Arrows
2201,915
Factor Arrows
367,305
Factor Arrows
322,435
Factor Arrows
54,487
Factor Arrows
7641

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, 7, 641

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 641 = 807,660

This can also be written as 22 x 32 x 51 x 71 x 6411 = 807,660

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 807,660:


Ask a Question