Q: What are the prime factors of the number 126,473,319?

 A: 3, 7, 17, 13121

Why are those the prime factors of the number 126,473,319?

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 126,473,319

126,473,319
Factor Arrows
342,157,773
Factor Arrows
314,052,591
Factor Arrows
34,684,197
Factor Arrows
31,561,399
Factor Arrows
7223,057
Factor Arrows
1713,121

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:

3, 7, 17, 13121

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 17 x 13,121 = 126,473,319

This can also be written as 34 x 71 x 171 x 13,1211 = 126,473,319

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


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