Q: What are the prime factors of the number 281,340?

 A: 2, 3, 5, 521

Why are those the prime factors of the number 281,340?

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 281,340

281,340
Factor Arrows
2140,670
Factor Arrows
270,335
Factor Arrows
323,445
Factor Arrows
37,815
Factor Arrows
32,605
Factor Arrows
5521

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, 521

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 521 = 281,340

This can also be written as 22 x 33 x 51 x 5211 = 281,340

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 281,340:


Ask a Question