Q: What are the prime factors of the number 166,211,656?

 A: 2, 13, 73, 21893

Why are those the prime factors of the number 166,211,656?

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 166,211,656

166,211,656
Factor Arrows
283,105,828
Factor Arrows
241,552,914
Factor Arrows
220,776,457
Factor Arrows
131,598,189
Factor Arrows
7321,893

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, 73, 21893

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 73 x 21,893 = 166,211,656

This can also be written as 23 x 131 x 731 x 21,8931 = 166,211,656

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


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