Q: What are the prime factors of the number 166,538,568?

 A: 2, 3, 7, 631, 1571

Why are those the prime factors of the number 166,538,568?

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 166,538,568

166,538,568
Factor Arrows
283,269,284
Factor Arrows
241,634,642
Factor Arrows
220,817,321
Factor Arrows
36,939,107
Factor Arrows
7991,301
Factor Arrows
6311,571

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, 631, 1571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 631 x 1,571 = 166,538,568

This can also be written as 23 x 31 x 71 x 6311 x 1,5711 = 166,538,568

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


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