Q: What are the prime factors of the number 516,128?

 A: 2, 127

Why are those the prime factors of the number 516,128?

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 516,128

516,128
Factor Arrows
2258,064
Factor Arrows
2129,032
Factor Arrows
264,516
Factor Arrows
232,258
Factor Arrows
216,129
Factor Arrows
127127

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, 127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 127 x 127 = 516,128

This can also be written as 25 x 1272 = 516,128

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


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