Q: What are the prime factors of the number 111,434,400?

 A: 2, 3, 5, 7, 11, 67

Why are those the prime factors of the number 111,434,400?

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 111,434,400

111,434,400
Factor Arrows
255,717,200
Factor Arrows
227,858,600
Factor Arrows
213,929,300
Factor Arrows
26,964,650
Factor Arrows
23,482,325
Factor Arrows
31,160,775
Factor Arrows
3386,925
Factor Arrows
3128,975
Factor Arrows
525,795
Factor Arrows
55,159
Factor Arrows
7737
Factor Arrows
1167

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, 5, 7, 11, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5 x 7 x 11 x 67 = 111,434,400

This can also be written as 25 x 33 x 52 x 71 x 111 x 671 = 111,434,400

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


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