Q: What are the prime factors of the number 126,217,500?

 A: 2, 3, 5, 16829

Why are those the prime factors of the number 126,217,500?

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 126,217,500

126,217,500
Factor Arrows
263,108,750
Factor Arrows
231,554,375
Factor Arrows
310,518,125
Factor Arrows
52,103,625
Factor Arrows
5420,725
Factor Arrows
584,145
Factor Arrows
516,829

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, 3, 5, 16829

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 5 x 5 x 16,829 = 126,217,500

This can also be written as 22 x 31 x 54 x 16,8291 = 126,217,500

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


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