Q: What are the prime factors of the number 15,024,128?

 A: 2, 7, 131

Why are those the prime factors of the number 15,024,128?

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 15,024,128

15,024,128
Factor Arrows
27,512,064
Factor Arrows
23,756,032
Factor Arrows
21,878,016
Factor Arrows
2939,008
Factor Arrows
2469,504
Factor Arrows
2234,752
Factor Arrows
2117,376
Factor Arrows
258,688
Factor Arrows
229,344
Factor Arrows
214,672
Factor Arrows
27,336
Factor Arrows
23,668
Factor Arrows
21,834
Factor Arrows
2917
Factor Arrows
7131

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, 7, 131

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 2 x 2 x 2 x 2 x 2 x 7 x 131 = 15,024,128

This can also be written as 214 x 71 x 1311 = 15,024,128

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


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