Q: What are the prime factors of the number 12,146,208?

 A: 2, 3, 23, 5501

Why are those the prime factors of the number 12,146,208?

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 12,146,208

12,146,208
Factor Arrows
26,073,104
Factor Arrows
23,036,552
Factor Arrows
21,518,276
Factor Arrows
2759,138
Factor Arrows
2379,569
Factor Arrows
3126,523
Factor Arrows
235,501

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, 23, 5501

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 23 x 5,501 = 12,146,208

This can also be written as 25 x 31 x 231 x 5,5011 = 12,146,208

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


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