Q: What are the prime factors of the number 15,681,024?

 A: 2, 3, 41, 83

Why are those the prime factors of the number 15,681,024?

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 15,681,024

15,681,024
Factor Arrows
27,840,512
Factor Arrows
23,920,256
Factor Arrows
21,960,128
Factor Arrows
2980,064
Factor Arrows
2490,032
Factor Arrows
2245,016
Factor Arrows
2122,508
Factor Arrows
261,254
Factor Arrows
230,627
Factor Arrows
310,209
Factor Arrows
33,403
Factor Arrows
4183

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, 41, 83

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 41 x 83 = 15,681,024

This can also be written as 29 x 32 x 411 x 831 = 15,681,024

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


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