Q: What are the prime factors of the number 666,663,344?

 A: 2, 191, 218149

Why are those the prime factors of the number 666,663,344?

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 666,663,344

666,663,344
Factor Arrows
2333,331,672
Factor Arrows
2166,665,836
Factor Arrows
283,332,918
Factor Arrows
241,666,459
Factor Arrows
191218,149

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, 191, 218149

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 191 x 218,149 = 666,663,344

This can also be written as 24 x 1911 x 218,1491 = 666,663,344

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


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