Q: What are the prime factors of the number 82,672,785?

 A: 3, 5, 13, 17, 163

Why are those the prime factors of the number 82,672,785?

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 82,672,785

82,672,785
Factor Arrows
327,557,595
Factor Arrows
39,185,865
Factor Arrows
33,061,955
Factor Arrows
5612,391
Factor Arrows
1347,107
Factor Arrows
172,771
Factor Arrows
17163

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, 5, 13, 17, 163

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 13 x 17 x 17 x 163 = 82,672,785

This can also be written as 33 x 51 x 131 x 172 x 1631 = 82,672,785

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 82,672,785:


Ask a Question