Q: What are the prime factors of the number 203,472?

 A: 2, 3, 157

Why are those the prime factors of the number 203,472?

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 203,472

203,472
Factor Arrows
2101,736
Factor Arrows
250,868
Factor Arrows
225,434
Factor Arrows
212,717
Factor Arrows
34,239
Factor Arrows
31,413
Factor Arrows
3471
Factor Arrows
3157

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, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 157 = 203,472

This can also be written as 24 x 34 x 1571 = 203,472

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


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