Q: What are the prime factors of the number 987,900?

 A: 2, 3, 5, 37, 89

Why are those the prime factors of the number 987,900?

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 987,900

987,900
Factor Arrows
2493,950
Factor Arrows
2246,975
Factor Arrows
382,325
Factor Arrows
516,465
Factor Arrows
53,293
Factor Arrows
3789

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, 37, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 37 x 89 = 987,900

This can also be written as 22 x 31 x 52 x 371 x 891 = 987,900

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 987,900:


Ask a Question