Q: What are the prime factors of the number 133,756,170?

 A: 2, 3, 5, 17, 163, 1609

Why are those the prime factors of the number 133,756,170?

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 133,756,170

133,756,170
Factor Arrows
266,878,085
Factor Arrows
322,292,695
Factor Arrows
54,458,539
Factor Arrows
17262,267
Factor Arrows
1631,609

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, 5, 17, 163, 1609

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 17 x 163 x 1,609 = 133,756,170

This can also be written as 21 x 31 x 51 x 171 x 1631 x 1,6091 = 133,756,170

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


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