Q: What are the prime factors of the number 2,509,815?

 A: 3, 5, 7, 11, 41, 53

Why are those the prime factors of the number 2,509,815?

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 2,509,815

2,509,815
Factor Arrows
3836,605
Factor Arrows
5167,321
Factor Arrows
723,903
Factor Arrows
112,173
Factor Arrows
4153

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, 11, 41, 53

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 11 x 41 x 53 = 2,509,815

This can also be written as 31 x 51 x 71 x 111 x 411 x 531 = 2,509,815

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 2,509,815:


Ask a Question