Q: What are the prime factors of the number 2,123,744?

 A: 2, 7, 19, 499

Why are those the prime factors of the number 2,123,744?

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 2,123,744

2,123,744
Factor Arrows
21,061,872
Factor Arrows
2530,936
Factor Arrows
2265,468
Factor Arrows
2132,734
Factor Arrows
266,367
Factor Arrows
79,481
Factor Arrows
19499

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, 19, 499

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 19 x 499 = 2,123,744

This can also be written as 25 x 71 x 191 x 4991 = 2,123,744

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 2,123,744:


Ask a Question