Q: What are the prime factors of the number 13,076,672?

 A: 2, 7, 17, 101

Why are those the prime factors of the number 13,076,672?

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 13,076,672

13,076,672
Factor Arrows
26,538,336
Factor Arrows
23,269,168
Factor Arrows
21,634,584
Factor Arrows
2817,292
Factor Arrows
2408,646
Factor Arrows
2204,323
Factor Arrows
729,189
Factor Arrows
171,717
Factor Arrows
17101

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, 17, 101

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 7 x 17 x 17 x 101 = 13,076,672

This can also be written as 26 x 71 x 172 x 1011 = 13,076,672

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


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