Q: What are the prime factors of the number 118,872,800?

 A: 2, 5, 139, 1069

Why are those the prime factors of the number 118,872,800?

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 118,872,800

118,872,800
Factor Arrows
259,436,400
Factor Arrows
229,718,200
Factor Arrows
214,859,100
Factor Arrows
27,429,550
Factor Arrows
23,714,775
Factor Arrows
5742,955
Factor Arrows
5148,591
Factor Arrows
1391,069

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, 139, 1069

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 139 x 1,069 = 118,872,800

This can also be written as 25 x 52 x 1391 x 1,0691 = 118,872,800

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


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