Q: What are the prime factors of the number 671,194?

 A: 2, 17, 19, 1039

Why are those the prime factors of the number 671,194?

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 671,194

671,194
Factor Arrows
2335,597
Factor Arrows
1719,741
Factor Arrows
191,039

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, 17, 19, 1039

We can check our work by multiplying all of the prime factors together: 2 x 17 x 19 x 1,039 = 671,194

This can also be written as 21 x 171 x 191 x 1,0391 = 671,194

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


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