Q: What are the prime factors of the number 12,228,608?

 A: 2, 7, 853

Why are those the prime factors of the number 12,228,608?

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 12,228,608

12,228,608
Factor Arrows
26,114,304
Factor Arrows
23,057,152
Factor Arrows
21,528,576
Factor Arrows
2764,288
Factor Arrows
2382,144
Factor Arrows
2191,072
Factor Arrows
295,536
Factor Arrows
247,768
Factor Arrows
223,884
Factor Arrows
211,942
Factor Arrows
25,971
Factor Arrows
7853

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, 853

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 2 x 2 x 7 x 853 = 12,228,608

This can also be written as 211 x 71 x 8531 = 12,228,608

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


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