Q: What are the prime factors of the number 133,213,444?

 A: 2, 7, 13, 509, 719

Why are those the prime factors of the number 133,213,444?

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 133,213,444

133,213,444
Factor Arrows
266,606,722
Factor Arrows
233,303,361
Factor Arrows
74,757,623
Factor Arrows
13365,971
Factor Arrows
509719

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, 7, 13, 509, 719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 13 x 509 x 719 = 133,213,444

This can also be written as 22 x 71 x 131 x 5091 x 7191 = 133,213,444

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


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