Q: What are the prime factors of the number 12,108,330?

 A: 2, 3, 5, 13, 79, 131

Why are those the prime factors of the number 12,108,330?

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 12,108,330

12,108,330
Factor Arrows
26,054,165
Factor Arrows
32,018,055
Factor Arrows
3672,685
Factor Arrows
5134,537
Factor Arrows
1310,349
Factor Arrows
79131

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, 13, 79, 131

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 13 x 79 x 131 = 12,108,330

This can also be written as 21 x 32 x 51 x 131 x 791 x 1311 = 12,108,330

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


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