Q: What are the prime factors of the number 513,314,505?

 A: 3, 5, 11, 37, 28027

Why are those the prime factors of the number 513,314,505?

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 513,314,505

513,314,505
Factor Arrows
3171,104,835
Factor Arrows
357,034,945
Factor Arrows
511,406,989
Factor Arrows
111,036,999
Factor Arrows
3728,027

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:

3, 5, 11, 37, 28027

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 11 x 37 x 28,027 = 513,314,505

This can also be written as 32 x 51 x 111 x 371 x 28,0271 = 513,314,505

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


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