Q: What are the prime factors of the number 416,128?

 A: 2, 3251

Why are those the prime factors of the number 416,128?

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 416,128

416,128
Factor Arrows
2208,064
Factor Arrows
2104,032
Factor Arrows
252,016
Factor Arrows
226,008
Factor Arrows
213,004
Factor Arrows
26,502
Factor Arrows
23,251

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, 3251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3,251 = 416,128

This can also be written as 27 x 3,2511 = 416,128

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


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