Q: What are the prime factors of the number 243,200,200?

 A: 2, 5, 509, 2389

Why are those the prime factors of the number 243,200,200?

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 243,200,200

243,200,200
Factor Arrows
2121,600,100
Factor Arrows
260,800,050
Factor Arrows
230,400,025
Factor Arrows
56,080,005
Factor Arrows
51,216,001
Factor Arrows
5092,389

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, 509, 2389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 509 x 2,389 = 243,200,200

This can also be written as 23 x 52 x 5091 x 2,3891 = 243,200,200

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


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