Q: What are the prime factors of the number 66,321,330?

 A: 2, 3, 5, 617, 3583

Why are those the prime factors of the number 66,321,330?

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 66,321,330

66,321,330
Factor Arrows
233,160,665
Factor Arrows
311,053,555
Factor Arrows
52,210,711
Factor Arrows
6173,583

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, 617, 3583

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 617 x 3,583 = 66,321,330

This can also be written as 21 x 31 x 51 x 6171 x 3,5831 = 66,321,330

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 66,321,330:


Ask a Question