Q: What are the prime factors of the number 516,665,648?

 A: 2, 89, 157, 2311

Why are those the prime factors of the number 516,665,648?

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 516,665,648

516,665,648
Factor Arrows
2258,332,824
Factor Arrows
2129,166,412
Factor Arrows
264,583,206
Factor Arrows
232,291,603
Factor Arrows
89362,827
Factor Arrows
1572,311

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, 89, 157, 2311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 89 x 157 x 2,311 = 516,665,648

This can also be written as 24 x 891 x 1571 x 2,3111 = 516,665,648

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


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