Q: What are the prime factors of the number 109,783,200?

 A: 2, 3, 5, 149, 307

Why are those the prime factors of the number 109,783,200?

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 109,783,200

109,783,200
Factor Arrows
254,891,600
Factor Arrows
227,445,800
Factor Arrows
213,722,900
Factor Arrows
26,861,450
Factor Arrows
23,430,725
Factor Arrows
31,143,575
Factor Arrows
5228,715
Factor Arrows
545,743
Factor Arrows
149307

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, 149, 307

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 5 x 5 x 149 x 307 = 109,783,200

This can also be written as 25 x 31 x 52 x 1491 x 3071 = 109,783,200

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


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