Q: What are the prime factors of the number 408,900?

 A: 2, 3, 5, 29, 47

Why are those the prime factors of the number 408,900?

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 408,900

408,900
Factor Arrows
2204,450
Factor Arrows
2102,225
Factor Arrows
334,075
Factor Arrows
56,815
Factor Arrows
51,363
Factor Arrows
2947

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, 3, 5, 29, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 29 x 47 = 408,900

This can also be written as 22 x 31 x 52 x 291 x 471 = 408,900

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 408,900:


Ask a Question