Q: What are the prime factors of the number 164,705,724?

 A: 2, 3, 17, 1759

Why are those the prime factors of the number 164,705,724?

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 164,705,724

164,705,724
Factor Arrows
282,352,862
Factor Arrows
241,176,431
Factor Arrows
313,725,477
Factor Arrows
34,575,159
Factor Arrows
31,525,053
Factor Arrows
3508,351
Factor Arrows
1729,903
Factor Arrows
171,759

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:

2, 3, 17, 1759

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 17 x 17 x 1,759 = 164,705,724

This can also be written as 22 x 34 x 172 x 1,7591 = 164,705,724

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


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