Q: What are the prime factors of the number 766,126,720?

 A: 2, 5, 1197073

Why are those the prime factors of the number 766,126,720?

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 766,126,720

766,126,720
Factor Arrows
2383,063,360
Factor Arrows
2191,531,680
Factor Arrows
295,765,840
Factor Arrows
247,882,920
Factor Arrows
223,941,460
Factor Arrows
211,970,730
Factor Arrows
25,985,365
Factor Arrows
51,197,073

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, 5, 1197073

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 1,197,073 = 766,126,720

This can also be written as 27 x 51 x 1,197,0731 = 766,126,720

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


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