Q: What are the prime factors of the number 133,507,572?

 A: 2, 3, 11, 827, 1223

Why are those the prime factors of the number 133,507,572?

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 133,507,572

133,507,572
Factor Arrows
266,753,786
Factor Arrows
233,376,893
Factor Arrows
311,125,631
Factor Arrows
111,011,421
Factor Arrows
8271,223

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, 11, 827, 1223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 827 x 1,223 = 133,507,572

This can also be written as 22 x 31 x 111 x 8271 x 1,2231 = 133,507,572

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


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