Q: What are the prime factors of the number 511,744?

 A: 2, 1999

Why are those the prime factors of the number 511,744?

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 511,744

511,744
Factor Arrows
2255,872
Factor Arrows
2127,936
Factor Arrows
263,968
Factor Arrows
231,984
Factor Arrows
215,992
Factor Arrows
27,996
Factor Arrows
23,998
Factor Arrows
21,999

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, 1999

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 1,999 = 511,744

This can also be written as 28 x 1,9991 = 511,744

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


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