Q: What are the prime factors of the number 133,557,174?

 A: 2, 3, 47, 1949

Why are those the prime factors of the number 133,557,174?

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 133,557,174

133,557,174
Factor Arrows
266,778,587
Factor Arrows
322,259,529
Factor Arrows
37,419,843
Factor Arrows
32,473,281
Factor Arrows
3824,427
Factor Arrows
3274,809
Factor Arrows
391,603
Factor Arrows
471,949

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, 47, 1949

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 47 x 1,949 = 133,557,174

This can also be written as 21 x 36 x 471 x 1,9491 = 133,557,174

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


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