Q: What are the prime factors of the number 12,638,752?

 A: 2, 7, 17, 3319

Why are those the prime factors of the number 12,638,752?

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 12,638,752

12,638,752
Factor Arrows
26,319,376
Factor Arrows
23,159,688
Factor Arrows
21,579,844
Factor Arrows
2789,922
Factor Arrows
2394,961
Factor Arrows
756,423
Factor Arrows
173,319

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, 3319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 3,319 = 12,638,752

This can also be written as 25 x 71 x 171 x 3,3191 = 12,638,752

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


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