Q: What are the prime factors of the number 12,194,112?

 A: 2, 3, 7, 43, 211

Why are those the prime factors of the number 12,194,112?

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 12,194,112

12,194,112
Factor Arrows
26,097,056
Factor Arrows
23,048,528
Factor Arrows
21,524,264
Factor Arrows
2762,132
Factor Arrows
2381,066
Factor Arrows
2190,533
Factor Arrows
363,511
Factor Arrows
79,073
Factor Arrows
43211

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, 7, 43, 211

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 3 x 7 x 43 x 211 = 12,194,112

This can also be written as 26 x 31 x 71 x 431 x 2111 = 12,194,112

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


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