Q: What are the prime factors of the number 164,205,261?

 A: 3, 11, 17, 43, 2269

Why are those the prime factors of the number 164,205,261?

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 164,205,261

164,205,261
Factor Arrows
354,735,087
Factor Arrows
318,245,029
Factor Arrows
111,658,639
Factor Arrows
1797,567
Factor Arrows
432,269

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, 17, 43, 2269

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 17 x 43 x 2,269 = 164,205,261

This can also be written as 32 x 111 x 171 x 431 x 2,2691 = 164,205,261

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


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