Q: What are the prime factors of the number 71,316,126?

 A: 2, 3, 7, 20963

Why are those the prime factors of the number 71,316,126?

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 71,316,126

71,316,126
Factor Arrows
235,658,063
Factor Arrows
311,886,021
Factor Arrows
33,962,007
Factor Arrows
31,320,669
Factor Arrows
3440,223
Factor Arrows
3146,741
Factor Arrows
720,963

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, 7, 20963

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 7 x 20,963 = 71,316,126

This can also be written as 21 x 35 x 71 x 20,9631 = 71,316,126

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


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