Q: What are the prime factors of the number 166,301,315?

 A: 5, 199, 397, 421

Why are those the prime factors of the number 166,301,315?

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 166,301,315

166,301,315
Factor Arrows
533,260,263
Factor Arrows
199167,137
Factor Arrows
397421

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:

5, 199, 397, 421

We can check our work by multiplying all of the prime factors together: 5 x 199 x 397 x 421 = 166,301,315

This can also be written as 51 x 1991 x 3971 x 4211 = 166,301,315

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


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