Q: What are the prime factors of the number 15,122,048?

 A: 2, 31, 37, 103

Why are those the prime factors of the number 15,122,048?

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 15,122,048

15,122,048
Factor Arrows
27,561,024
Factor Arrows
23,780,512
Factor Arrows
21,890,256
Factor Arrows
2945,128
Factor Arrows
2472,564
Factor Arrows
2236,282
Factor Arrows
2118,141
Factor Arrows
313,811
Factor Arrows
37103

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, 31, 37, 103

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 31 x 37 x 103 = 15,122,048

This can also be written as 27 x 311 x 371 x 1031 = 15,122,048

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


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