Q: What are the prime factors of the number 170,176,380?

 A: 2, 3, 5, 11, 401, 643

Why are those the prime factors of the number 170,176,380?

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 170,176,380

170,176,380
Factor Arrows
285,088,190
Factor Arrows
242,544,095
Factor Arrows
314,181,365
Factor Arrows
52,836,273
Factor Arrows
11257,843
Factor Arrows
401643

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, 5, 11, 401, 643

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 401 x 643 = 170,176,380

This can also be written as 22 x 31 x 51 x 111 x 4011 x 6431 = 170,176,380

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


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