Q: What are the prime factors of the number 386,880?

 A: 2, 3, 5, 13, 31

Why are those the prime factors of the number 386,880?

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 386,880

386,880
Factor Arrows
2193,440
Factor Arrows
296,720
Factor Arrows
248,360
Factor Arrows
224,180
Factor Arrows
212,090
Factor Arrows
26,045
Factor Arrows
32,015
Factor Arrows
5403
Factor Arrows
1331

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, 13, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 13 x 31 = 386,880

This can also be written as 26 x 31 x 51 x 131 x 311 = 386,880

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 386,880:


Ask a Question