Q: What are the prime factors of the number 223,840?

 A: 2, 5, 1399

Why are those the prime factors of the number 223,840?

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 223,840

223,840
Factor Arrows
2111,920
Factor Arrows
255,960
Factor Arrows
227,980
Factor Arrows
213,990
Factor Arrows
26,995
Factor Arrows
51,399

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, 5, 1399

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 1,399 = 223,840

This can also be written as 25 x 51 x 1,3991 = 223,840

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 223,840:


Ask a Question