Q: What are the prime factors of the number 1,361,280?

 A: 2, 3, 5, 709

Why are those the prime factors of the number 1,361,280?

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 1,361,280

1,361,280
Factor Arrows
2680,640
Factor Arrows
2340,320
Factor Arrows
2170,160
Factor Arrows
285,080
Factor Arrows
242,540
Factor Arrows
221,270
Factor Arrows
210,635
Factor Arrows
33,545
Factor Arrows
5709

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, 709

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 3 x 5 x 709 = 1,361,280

This can also be written as 27 x 31 x 51 x 7091 = 1,361,280

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 1,361,280:


Ask a Question