Q: What are the prime factors of the number 12,102,144?

 A: 2, 3, 7879

Why are those the prime factors of the number 12,102,144?

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 12,102,144

12,102,144
Factor Arrows
26,051,072
Factor Arrows
23,025,536
Factor Arrows
21,512,768
Factor Arrows
2756,384
Factor Arrows
2378,192
Factor Arrows
2189,096
Factor Arrows
294,548
Factor Arrows
247,274
Factor Arrows
223,637
Factor Arrows
37,879

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, 7879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7,879 = 12,102,144

This can also be written as 29 x 31 x 7,8791 = 12,102,144

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


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