Q: What are the prime factors of the number 12,642,304?

 A: 2, 6173

Why are those the prime factors of the number 12,642,304?

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 12,642,304

12,642,304
Factor Arrows
26,321,152
Factor Arrows
23,160,576
Factor Arrows
21,580,288
Factor Arrows
2790,144
Factor Arrows
2395,072
Factor Arrows
2197,536
Factor Arrows
298,768
Factor Arrows
249,384
Factor Arrows
224,692
Factor Arrows
212,346
Factor Arrows
26,173

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, 6173

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 6,173 = 12,642,304

This can also be written as 211 x 6,1731 = 12,642,304

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


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