Q: What are the prime factors of the number 12,208,742?

 A: 2, 7, 13, 37

Why are those the prime factors of the number 12,208,742?

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 12,208,742

12,208,742
Factor Arrows
26,104,371
Factor Arrows
7872,053
Factor Arrows
7124,579
Factor Arrows
717,797
Factor Arrows
131,369
Factor Arrows
3737

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, 13, 37

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 7 x 13 x 37 x 37 = 12,208,742

This can also be written as 21 x 73 x 131 x 372 = 12,208,742

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


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