Q: What are the prime factors of the number 133,203,240?

 A: 2, 3, 5, 370009

Why are those the prime factors of the number 133,203,240?

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 133,203,240

133,203,240
Factor Arrows
266,601,620
Factor Arrows
233,300,810
Factor Arrows
216,650,405
Factor Arrows
35,550,135
Factor Arrows
31,850,045
Factor Arrows
5370,009

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, 370009

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 370,009 = 133,203,240

This can also be written as 23 x 32 x 51 x 370,0091 = 133,203,240

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


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