Q: What are the prime factors of the number 221,133,229?

 A: 17, 19, 797, 859

Why are those the prime factors of the number 221,133,229?

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 221,133,229

221,133,229
Factor Arrows
1713,007,837
Factor Arrows
19684,623
Factor Arrows
797859

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:

17, 19, 797, 859

We can check our work by multiplying all of the prime factors together: 17 x 19 x 797 x 859 = 221,133,229

This can also be written as 171 x 191 x 7971 x 8591 = 221,133,229

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


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