Q: What are the prime factors of the number 126,257,616?

 A: 2, 3, 37, 2633

Why are those the prime factors of the number 126,257,616?

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 126,257,616

126,257,616
Factor Arrows
263,128,808
Factor Arrows
231,564,404
Factor Arrows
215,782,202
Factor Arrows
27,891,101
Factor Arrows
32,630,367
Factor Arrows
3876,789
Factor Arrows
3292,263
Factor Arrows
397,421
Factor Arrows
372,633

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, 37, 2633

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 37 x 2,633 = 126,257,616

This can also be written as 24 x 34 x 371 x 2,6331 = 126,257,616

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


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