Q: What are the prime factors of the number 12,231,000?

 A: 2, 3, 5, 151

Why are those the prime factors of the number 12,231,000?

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 12,231,000

12,231,000
Factor Arrows
26,115,500
Factor Arrows
23,057,750
Factor Arrows
21,528,875
Factor Arrows
3509,625
Factor Arrows
3169,875
Factor Arrows
356,625
Factor Arrows
318,875
Factor Arrows
53,775
Factor Arrows
5755
Factor Arrows
5151

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, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 5 x 151 = 12,231,000

This can also be written as 23 x 34 x 53 x 1511 = 12,231,000

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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