Q: What are the prime factors of the number 688,194?

 A: 2, 3, 13, 17, 173

Why are those the prime factors of the number 688,194?

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 688,194

688,194
Factor Arrows
2344,097
Factor Arrows
3114,699
Factor Arrows
338,233
Factor Arrows
132,941
Factor Arrows
17173

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, 13, 17, 173

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 17 x 173 = 688,194

This can also be written as 21 x 32 x 131 x 171 x 1731 = 688,194

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


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