Q: What are the prime factors of the number 133,132,500?

 A: 2, 3, 5, 61, 97

Why are those the prime factors of the number 133,132,500?

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 133,132,500

133,132,500
Factor Arrows
266,566,250
Factor Arrows
233,283,125
Factor Arrows
311,094,375
Factor Arrows
33,698,125
Factor Arrows
5739,625
Factor Arrows
5147,925
Factor Arrows
529,585
Factor Arrows
55,917
Factor Arrows
6197

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, 61, 97

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 5 x 5 x 61 x 97 = 133,132,500

This can also be written as 22 x 32 x 54 x 611 x 971 = 133,132,500

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


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