Q: What are the prime factors of the number 666,536?

 A: 2, 13, 17, 29

Why are those the prime factors of the number 666,536?

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 666,536

666,536
Factor Arrows
2333,268
Factor Arrows
2166,634
Factor Arrows
283,317
Factor Arrows
136,409
Factor Arrows
13493
Factor Arrows
1729

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, 13, 17, 29

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 13 x 17 x 29 = 666,536

This can also be written as 23 x 132 x 171 x 291 = 666,536

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


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