Q: What are the prime factors of the number 165,223,611?

 A: 3, 7, 37, 23627

Why are those the prime factors of the number 165,223,611?

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 165,223,611

165,223,611
Factor Arrows
355,074,537
Factor Arrows
318,358,179
Factor Arrows
36,119,393
Factor Arrows
7874,199
Factor Arrows
3723,627

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, 7, 37, 23627

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 37 x 23,627 = 165,223,611

This can also be written as 33 x 71 x 371 x 23,6271 = 165,223,611

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


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