Q: What are the prime factors of the number 505,040,103?

 A: 3, 97, 64279

Why are those the prime factors of the number 505,040,103?

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 505,040,103

505,040,103
Factor Arrows
3168,346,701
Factor Arrows
356,115,567
Factor Arrows
318,705,189
Factor Arrows
36,235,063
Factor Arrows
9764,279

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, 97, 64279

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 97 x 64,279 = 505,040,103

This can also be written as 34 x 971 x 64,2791 = 505,040,103

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


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