Q: What are the prime factors of the number 203,112,320?

 A: 2, 5, 317363

Why are those the prime factors of the number 203,112,320?

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 203,112,320

203,112,320
Factor Arrows
2101,556,160
Factor Arrows
250,778,080
Factor Arrows
225,389,040
Factor Arrows
212,694,520
Factor Arrows
26,347,260
Factor Arrows
23,173,630
Factor Arrows
21,586,815
Factor Arrows
5317,363

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, 317363

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 317,363 = 203,112,320

This can also be written as 27 x 51 x 317,3631 = 203,112,320

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


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