Q: What are the prime factors of the number 12,212,409?

 A: 3, 11, 17, 1979

Why are those the prime factors of the number 12,212,409?

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 12,212,409

12,212,409
Factor Arrows
34,070,803
Factor Arrows
11370,073
Factor Arrows
1133,643
Factor Arrows
171,979

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:

3, 11, 17, 1979

We can check our work by multiplying all of the prime factors together: 3 x 11 x 11 x 17 x 1,979 = 12,212,409

This can also be written as 31 x 112 x 171 x 1,9791 = 12,212,409

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


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