Q: What are the prime factors of the number 516,415,647?

 A: 3, 11, 17, 89, 10343

Why are those the prime factors of the number 516,415,647?

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 516,415,647

516,415,647
Factor Arrows
3172,138,549
Factor Arrows
1115,648,959
Factor Arrows
17920,527
Factor Arrows
8910,343

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, 11, 17, 89, 10343

We can check our work by multiplying all of the prime factors together: 3 x 11 x 17 x 89 x 10,343 = 516,415,647

This can also be written as 31 x 111 x 171 x 891 x 10,3431 = 516,415,647

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


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