Q: What are the prime factors of the number 738,170,688?

 A: 2, 3, 191, 20129

Why are those the prime factors of the number 738,170,688?

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 738,170,688

738,170,688
Factor Arrows
2369,085,344
Factor Arrows
2184,542,672
Factor Arrows
292,271,336
Factor Arrows
246,135,668
Factor Arrows
223,067,834
Factor Arrows
211,533,917
Factor Arrows
33,844,639
Factor Arrows
19120,129

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, 191, 20129

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 3 x 191 x 20,129 = 738,170,688

This can also be written as 26 x 31 x 1911 x 20,1291 = 738,170,688

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


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