Q: What are the prime factors of the number 19,072,512?

 A: 2, 3, 4139

Why are those the prime factors of the number 19,072,512?

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 19,072,512

19,072,512
Factor Arrows
29,536,256
Factor Arrows
24,768,128
Factor Arrows
22,384,064
Factor Arrows
21,192,032
Factor Arrows
2596,016
Factor Arrows
2298,008
Factor Arrows
2149,004
Factor Arrows
274,502
Factor Arrows
237,251
Factor Arrows
312,417
Factor Arrows
34,139

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, 4139

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 2 x 2 x 3 x 3 x 4,139 = 19,072,512

This can also be written as 29 x 32 x 4,1391 = 19,072,512

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


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