Q: What are the prime factors of the number 18,300?

 A: 2, 3, 5, 61

Why are those the prime factors of the number 18,300?

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 18,300

18,300
Factor Arrows
29,150
Factor Arrows
24,575
Factor Arrows
31,525
Factor Arrows
5305
Factor Arrows
561

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, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 61 = 18,300

This can also be written as 22 x 31 x 52 x 611 = 18,300

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 18,300:


Ask a Question