Q: What are the prime factors of the number 18,866,624?

 A: 2, 7, 23, 1831

Why are those the prime factors of the number 18,866,624?

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 18,866,624

18,866,624
Factor Arrows
29,433,312
Factor Arrows
24,716,656
Factor Arrows
22,358,328
Factor Arrows
21,179,164
Factor Arrows
2589,582
Factor Arrows
2294,791
Factor Arrows
742,113
Factor Arrows
231,831

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, 7, 23, 1831

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 7 x 23 x 1,831 = 18,866,624

This can also be written as 26 x 71 x 231 x 1,8311 = 18,866,624

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 18,866,624:


Ask a Question