Q: What are the prime factors of the number 505,530,330?

 A: 2, 3, 5, 31, 337, 1613

Why are those the prime factors of the number 505,530,330?

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 505,530,330

505,530,330
Factor Arrows
2252,765,165
Factor Arrows
384,255,055
Factor Arrows
516,851,011
Factor Arrows
31543,581
Factor Arrows
3371,613

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, 5, 31, 337, 1613

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 31 x 337 x 1,613 = 505,530,330

This can also be written as 21 x 31 x 51 x 311 x 3371 x 1,6131 = 505,530,330

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


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