Q: What are the prime factors of the number 166,245,664?

 A: 2, 13, 137, 2917

Why are those the prime factors of the number 166,245,664?

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 166,245,664

166,245,664
Factor Arrows
283,122,832
Factor Arrows
241,561,416
Factor Arrows
220,780,708
Factor Arrows
210,390,354
Factor Arrows
25,195,177
Factor Arrows
13399,629
Factor Arrows
1372,917

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, 137, 2917

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 137 x 2,917 = 166,245,664

This can also be written as 25 x 131 x 1371 x 2,9171 = 166,245,664

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


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