Q: What are the prime factors of the number 353,280?

 A: 2, 3, 5, 23

Why are those the prime factors of the number 353,280?

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 353,280

353,280
Factor Arrows
2176,640
Factor Arrows
288,320
Factor Arrows
244,160
Factor Arrows
222,080
Factor Arrows
211,040
Factor Arrows
25,520
Factor Arrows
22,760
Factor Arrows
21,380
Factor Arrows
2690
Factor Arrows
2345
Factor Arrows
3115
Factor Arrows
523

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, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 23 = 353,280

This can also be written as 210 x 31 x 51 x 231 = 353,280

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 353,280:


Ask a Question