Q: What are the prime factors of the number 309,080?

 A: 2, 5, 7727

Why are those the prime factors of the number 309,080?

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 309,080

309,080
Factor Arrows
2154,540
Factor Arrows
277,270
Factor Arrows
238,635
Factor Arrows
57,727

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, 5, 7727

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7,727 = 309,080

This can also be written as 23 x 51 x 7,7271 = 309,080

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 309,080:


Ask a Question