Q: What are the prime factors of the number 31,000,128?

 A: 2, 3, 161459

Why are those the prime factors of the number 31,000,128?

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 31,000,128

31,000,128
Factor Arrows
215,500,064
Factor Arrows
27,750,032
Factor Arrows
23,875,016
Factor Arrows
21,937,508
Factor Arrows
2968,754
Factor Arrows
2484,377
Factor Arrows
3161,459

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, 161459

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 161,459 = 31,000,128

This can also be written as 26 x 31 x 161,4591 = 31,000,128

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 31,000,128:


Ask a Question