Q: What are the prime factors of the number 728,757?

 A: 3, 2999

Why are those the prime factors of the number 728,757?

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 728,757

728,757
Factor Arrows
3242,919
Factor Arrows
380,973
Factor Arrows
326,991
Factor Arrows
38,997
Factor Arrows
32,999

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:

3, 2999

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 2,999 = 728,757

This can also be written as 35 x 2,9991 = 728,757

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 728,757:


Ask a Question