Q: What are the prime factors of the number 166,998,888?

 A: 2, 3, 7, 17, 73, 89

Why are those the prime factors of the number 166,998,888?

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 166,998,888

166,998,888
Factor Arrows
283,499,444
Factor Arrows
241,749,722
Factor Arrows
220,874,861
Factor Arrows
36,958,287
Factor Arrows
32,319,429
Factor Arrows
3773,143
Factor Arrows
7110,449
Factor Arrows
176,497
Factor Arrows
7389

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, 17, 73, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 17 x 73 x 89 = 166,998,888

This can also be written as 23 x 33 x 71 x 171 x 731 x 891 = 166,998,888

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


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