Q: What are the prime factors of the number 28,007,184?

 A: 2, 3, 137, 4259

Why are those the prime factors of the number 28,007,184?

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 28,007,184

28,007,184
Factor Arrows
214,003,592
Factor Arrows
27,001,796
Factor Arrows
23,500,898
Factor Arrows
21,750,449
Factor Arrows
3583,483
Factor Arrows
1374,259

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, 137, 4259

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 137 x 4,259 = 28,007,184

This can also be written as 24 x 31 x 1371 x 4,2591 = 28,007,184

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


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