Q: What are the prime factors of the number 505,236,666?

 A: 2, 3, 11, 29, 107, 2467

Why are those the prime factors of the number 505,236,666?

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 505,236,666

505,236,666
Factor Arrows
2252,618,333
Factor Arrows
384,206,111
Factor Arrows
117,655,101
Factor Arrows
29263,969
Factor Arrows
1072,467

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, 11, 29, 107, 2467

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 29 x 107 x 2,467 = 505,236,666

This can also be written as 21 x 31 x 111 x 291 x 1071 x 2,4671 = 505,236,666

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


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