Q: What are the prime factors of the number 203,023,418?

 A: 2, 13, 17, 89, 397

Why are those the prime factors of the number 203,023,418?

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 203,023,418

203,023,418
Factor Arrows
2101,511,709
Factor Arrows
137,808,593
Factor Arrows
13600,661
Factor Arrows
1735,333
Factor Arrows
89397

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, 13, 17, 89, 397

We can check our work by multiplying all of the prime factors together: 2 x 13 x 13 x 17 x 89 x 397 = 203,023,418

This can also be written as 21 x 132 x 171 x 891 x 3971 = 203,023,418

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


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