Q: What are the prime factors of the number 203,173,216?

 A: 2, 37, 101, 1699

Why are those the prime factors of the number 203,173,216?

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 203,173,216

203,173,216
Factor Arrows
2101,586,608
Factor Arrows
250,793,304
Factor Arrows
225,396,652
Factor Arrows
212,698,326
Factor Arrows
26,349,163
Factor Arrows
37171,599
Factor Arrows
1011,699

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, 37, 101, 1699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 37 x 101 x 1,699 = 203,173,216

This can also be written as 25 x 371 x 1011 x 1,6991 = 203,173,216

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


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