Q: What are the prime factors of the number 171,393,794?

 A: 2, 11, 13, 19, 31541

Why are those the prime factors of the number 171,393,794?

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 171,393,794

171,393,794
Factor Arrows
285,696,897
Factor Arrows
117,790,627
Factor Arrows
13599,279
Factor Arrows
1931,541

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, 11, 13, 19, 31541

We can check our work by multiplying all of the prime factors together: 2 x 11 x 13 x 19 x 31,541 = 171,393,794

This can also be written as 21 x 111 x 131 x 191 x 31,5411 = 171,393,794

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


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