Q: What are the prime factors of the number 166,540,010?

 A: 2, 5, 7, 13, 23, 73, 109

Why are those the prime factors of the number 166,540,010?

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 166,540,010

166,540,010
Factor Arrows
283,270,005
Factor Arrows
516,654,001
Factor Arrows
72,379,143
Factor Arrows
13183,011
Factor Arrows
237,957
Factor Arrows
73109

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, 13, 23, 73, 109

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 13 x 23 x 73 x 109 = 166,540,010

This can also be written as 21 x 51 x 71 x 131 x 231 x 731 x 1091 = 166,540,010

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


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