Q: What are the prime factors of the number 47,555,872?

 A: 2, 7, 13, 2333

Why are those the prime factors of the number 47,555,872?

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 47,555,872

47,555,872
Factor Arrows
223,777,936
Factor Arrows
211,888,968
Factor Arrows
25,944,484
Factor Arrows
22,972,242
Factor Arrows
21,486,121
Factor Arrows
7212,303
Factor Arrows
730,329
Factor Arrows
132,333

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, 7, 13, 2333

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 13 x 2,333 = 47,555,872

This can also be written as 25 x 72 x 131 x 2,3331 = 47,555,872

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


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