Q: What are the prime factors of the number 203,034,128?

 A: 2, 11, 17, 31, 199

Why are those the prime factors of the number 203,034,128?

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 203,034,128

203,034,128
Factor Arrows
2101,517,064
Factor Arrows
250,758,532
Factor Arrows
225,379,266
Factor Arrows
212,689,633
Factor Arrows
111,153,603
Factor Arrows
11104,873
Factor Arrows
176,169
Factor Arrows
31199

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, 11, 17, 31, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 11 x 17 x 31 x 199 = 203,034,128

This can also be written as 24 x 112 x 171 x 311 x 1991 = 203,034,128

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


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