Q: What are the prime factors of the number 120,348,900?

 A: 2, 3, 5, 7, 2729

Why are those the prime factors of the number 120,348,900?

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 120,348,900

120,348,900
Factor Arrows
260,174,450
Factor Arrows
230,087,225
Factor Arrows
310,029,075
Factor Arrows
33,343,025
Factor Arrows
5668,605
Factor Arrows
5133,721
Factor Arrows
719,103
Factor Arrows
72,729

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, 7, 2729

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 7 x 7 x 2,729 = 120,348,900

This can also be written as 22 x 32 x 52 x 72 x 2,7291 = 120,348,900

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 120,348,900:


Ask a Question