Q: What are the prime factors of the number 20,072,512?

 A: 2, 17, 19, 971

Why are those the prime factors of the number 20,072,512?

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 20,072,512

20,072,512
Factor Arrows
210,036,256
Factor Arrows
25,018,128
Factor Arrows
22,509,064
Factor Arrows
21,254,532
Factor Arrows
2627,266
Factor Arrows
2313,633
Factor Arrows
1718,449
Factor Arrows
19971

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, 17, 19, 971

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 17 x 19 x 971 = 20,072,512

This can also be written as 26 x 171 x 191 x 9711 = 20,072,512

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


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