Q: What are the prime factors of the number 203,111,298?

 A: 2, 3, 13, 23, 2903

Why are those the prime factors of the number 203,111,298?

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 203,111,298

203,111,298
Factor Arrows
2101,555,649
Factor Arrows
333,851,883
Factor Arrows
311,283,961
Factor Arrows
13867,997
Factor Arrows
1366,769
Factor Arrows
232,903

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, 3, 13, 23, 2903

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 13 x 23 x 2,903 = 203,111,298

This can also be written as 21 x 32 x 132 x 231 x 2,9031 = 203,111,298

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


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