Q: What are the prime factors of the number 166,125,141?

 A: 3, 7, 13, 743

Why are those the prime factors of the number 166,125,141?

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 166,125,141

166,125,141
Factor Arrows
355,375,047
Factor Arrows
318,458,349
Factor Arrows
36,152,783
Factor Arrows
7878,969
Factor Arrows
7125,567
Factor Arrows
139,659
Factor Arrows
13743

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:

3, 7, 13, 743

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 7 x 13 x 13 x 743 = 166,125,141

This can also be written as 33 x 72 x 132 x 7431 = 166,125,141

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


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