Q: What are the prime factors of the number 166,602,618?

 A: 2, 3, 7, 13, 17, 31, 193

Why are those the prime factors of the number 166,602,618?

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 166,602,618

166,602,618
Factor Arrows
283,301,309
Factor Arrows
327,767,103
Factor Arrows
39,255,701
Factor Arrows
71,322,243
Factor Arrows
13101,711
Factor Arrows
175,983
Factor Arrows
31193

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, 13, 17, 31, 193

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 13 x 17 x 31 x 193 = 166,602,618

This can also be written as 21 x 32 x 71 x 131 x 171 x 311 x 1931 = 166,602,618

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


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