Q: What are the prime factors of the number 170,157,216?

 A: 2, 3, 17, 41, 2543

Why are those the prime factors of the number 170,157,216?

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 170,157,216

170,157,216
Factor Arrows
285,078,608
Factor Arrows
242,539,304
Factor Arrows
221,269,652
Factor Arrows
210,634,826
Factor Arrows
25,317,413
Factor Arrows
31,772,471
Factor Arrows
17104,263
Factor Arrows
412,543

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, 17, 41, 2543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 17 x 41 x 2,543 = 170,157,216

This can also be written as 25 x 31 x 171 x 411 x 2,5431 = 170,157,216

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


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