Q: What are the prime factors of the number 64,576?

 A: 2, 1009

Why are those the prime factors of the number 64,576?

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 64,576

64,576
Factor Arrows
232,288
Factor Arrows
216,144
Factor Arrows
28,072
Factor Arrows
24,036
Factor Arrows
22,018
Factor Arrows
21,009

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, 1009

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 1,009 = 64,576

This can also be written as 26 x 1,0091 = 64,576

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


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