Q: What are the prime factors of the number 25,360,545?

 A: 3, 5, 7, 149, 1621

Why are those the prime factors of the number 25,360,545?

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 25,360,545

25,360,545
Factor Arrows
38,453,515
Factor Arrows
51,690,703
Factor Arrows
7241,529
Factor Arrows
1491,621

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:

3, 5, 7, 149, 1621

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 149 x 1,621 = 25,360,545

This can also be written as 31 x 51 x 71 x 1491 x 1,6211 = 25,360,545

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 25,360,545:


Ask a Question