Q: What are the prime factors of the number 18,256,512?

 A: 2, 3, 47543

Why are those the prime factors of the number 18,256,512?

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 18,256,512

18,256,512
Factor Arrows
29,128,256
Factor Arrows
24,564,128
Factor Arrows
22,282,064
Factor Arrows
21,141,032
Factor Arrows
2570,516
Factor Arrows
2285,258
Factor Arrows
2142,629
Factor Arrows
347,543

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, 3, 47543

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 x 47,543 = 18,256,512

This can also be written as 27 x 31 x 47,5431 = 18,256,512

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


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