Q: What are the prime factors of the number 126,271,712?

 A: 2, 7, 313, 1801

Why are those the prime factors of the number 126,271,712?

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 126,271,712

126,271,712
Factor Arrows
263,135,856
Factor Arrows
231,567,928
Factor Arrows
215,783,964
Factor Arrows
27,891,982
Factor Arrows
23,945,991
Factor Arrows
7563,713
Factor Arrows
3131,801

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, 313, 1801

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 313 x 1,801 = 126,271,712

This can also be written as 25 x 71 x 3131 x 1,8011 = 126,271,712

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


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