Q: What are the prime factors of the number 203,324,128?

 A: 2, 7, 129671

Why are those the prime factors of the number 203,324,128?

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 203,324,128

203,324,128
Factor Arrows
2101,662,064
Factor Arrows
250,831,032
Factor Arrows
225,415,516
Factor Arrows
212,707,758
Factor Arrows
26,353,879
Factor Arrows
7907,697
Factor Arrows
7129,671

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, 7, 129671

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 129,671 = 203,324,128

This can also be written as 25 x 72 x 129,6711 = 203,324,128

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


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