Q: What are the prime factors of the number 25,231,856?

 A: 2, 13, 29, 47, 89

Why are those the prime factors of the number 25,231,856?

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 25,231,856

25,231,856
Factor Arrows
212,615,928
Factor Arrows
26,307,964
Factor Arrows
23,153,982
Factor Arrows
21,576,991
Factor Arrows
13121,307
Factor Arrows
294,183
Factor Arrows
4789

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, 13, 29, 47, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 29 x 47 x 89 = 25,231,856

This can also be written as 24 x 131 x 291 x 471 x 891 = 25,231,856

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 25,231,856:


Ask a Question