Q: What are the prime factors of the number 198,495?

 A: 3, 5, 11, 401

Why are those the prime factors of the number 198,495?

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 198,495

198,495
Factor Arrows
366,165
Factor Arrows
322,055
Factor Arrows
54,411
Factor Arrows
11401

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, 11, 401

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 11 x 401 = 198,495

This can also be written as 32 x 51 x 111 x 4011 = 198,495

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


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