Q: What are the prime factors of the number 166,401,213?

 A: 3, 11, 199, 25339

Why are those the prime factors of the number 166,401,213?

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 166,401,213

166,401,213
Factor Arrows
355,467,071
Factor Arrows
115,042,461
Factor Arrows
19925,339

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:

3, 11, 199, 25339

We can check our work by multiplying all of the prime factors together: 3 x 11 x 199 x 25,339 = 166,401,213

This can also be written as 31 x 111 x 1991 x 25,3391 = 166,401,213

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


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