Q: What are the prime factors of the number 129,712?

 A: 2, 11, 67

Why are those the prime factors of the number 129,712?

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 129,712

129,712
Factor Arrows
264,856
Factor Arrows
232,428
Factor Arrows
216,214
Factor Arrows
28,107
Factor Arrows
11737
Factor Arrows
1167

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, 11, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 11 x 67 = 129,712

This can also be written as 24 x 112 x 671 = 129,712

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


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