Q: What are the prime factors of the number 345,904?

 A: 2, 13, 1663

Why are those the prime factors of the number 345,904?

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 345,904

345,904
Factor Arrows
2172,952
Factor Arrows
286,476
Factor Arrows
243,238
Factor Arrows
221,619
Factor Arrows
131,663

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, 1663

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 1,663 = 345,904

This can also be written as 24 x 131 x 1,6631 = 345,904

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 345,904:


Ask a Question