Q: What are the prime factors of the number 118,347,768?

 A: 2, 3, 7, 11, 21347

Why are those the prime factors of the number 118,347,768?

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 118,347,768

118,347,768
Factor Arrows
259,173,884
Factor Arrows
229,586,942
Factor Arrows
214,793,471
Factor Arrows
34,931,157
Factor Arrows
31,643,719
Factor Arrows
7234,817
Factor Arrows
1121,347

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, 11, 21347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 11 x 21,347 = 118,347,768

This can also be written as 23 x 32 x 71 x 111 x 21,3471 = 118,347,768

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


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