Q: What are the prime factors of the number 166,222,000?

 A: 2, 5, 7, 31, 383

Why are those the prime factors of the number 166,222,000?

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 166,222,000

166,222,000
Factor Arrows
283,111,000
Factor Arrows
241,555,500
Factor Arrows
220,777,750
Factor Arrows
210,388,875
Factor Arrows
52,077,775
Factor Arrows
5415,555
Factor Arrows
583,111
Factor Arrows
711,873
Factor Arrows
31383

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, 5, 7, 31, 383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 5 x 7 x 31 x 383 = 166,222,000

This can also be written as 24 x 53 x 71 x 311 x 3831 = 166,222,000

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


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