Q: What are the prime factors of the number 522,144?

 A: 2, 3, 7, 37

Why are those the prime factors of the number 522,144?

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 522,144

522,144
Factor Arrows
2261,072
Factor Arrows
2130,536
Factor Arrows
265,268
Factor Arrows
232,634
Factor Arrows
216,317
Factor Arrows
35,439
Factor Arrows
31,813
Factor Arrows
7259
Factor Arrows
737

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, 7, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 7 x 37 = 522,144

This can also be written as 25 x 32 x 72 x 371 = 522,144

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


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