Q: What are the prime factors of the number 163,501,605?

 A: 3, 5, 577, 2099

Why are those the prime factors of the number 163,501,605?

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 163,501,605

163,501,605
Factor Arrows
354,500,535
Factor Arrows
318,166,845
Factor Arrows
36,055,615
Factor Arrows
51,211,123
Factor Arrows
5772,099

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, 5, 577, 2099

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 577 x 2,099 = 163,501,605

This can also be written as 33 x 51 x 5771 x 2,0991 = 163,501,605

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


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