Q: What are the prime factors of the number 720,351,104?

 A: 2, 11, 19, 26927

Why are those the prime factors of the number 720,351,104?

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 720,351,104

720,351,104
Factor Arrows
2360,175,552
Factor Arrows
2180,087,776
Factor Arrows
290,043,888
Factor Arrows
245,021,944
Factor Arrows
222,510,972
Factor Arrows
211,255,486
Factor Arrows
25,627,743
Factor Arrows
11511,613
Factor Arrows
1926,927

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, 11, 19, 26927

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 11 x 19 x 26,927 = 720,351,104

This can also be written as 27 x 111 x 191 x 26,9271 = 720,351,104

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


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