Q: What are the prime factors of the number 31,681,008?

 A: 2, 3, 31, 47, 151

Why are those the prime factors of the number 31,681,008?

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 31,681,008

31,681,008
Factor Arrows
215,840,504
Factor Arrows
27,920,252
Factor Arrows
23,960,126
Factor Arrows
21,980,063
Factor Arrows
3660,021
Factor Arrows
3220,007
Factor Arrows
317,097
Factor Arrows
47151

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, 31, 47, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 31 x 47 x 151 = 31,681,008

This can also be written as 24 x 32 x 311 x 471 x 1511 = 31,681,008

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 31,681,008:


Ask a Question