Q: What are the prime factors of the number 12,105,632?

 A: 2, 7, 11, 17

Why are those the prime factors of the number 12,105,632?

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 12,105,632

12,105,632
Factor Arrows
26,052,816
Factor Arrows
23,026,408
Factor Arrows
21,513,204
Factor Arrows
2756,602
Factor Arrows
2378,301
Factor Arrows
754,043
Factor Arrows
114,913
Factor Arrows
17289
Factor Arrows
1717

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, 7, 11, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 17 x 17 x 17 = 12,105,632

This can also be written as 25 x 71 x 111 x 173 = 12,105,632

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


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