Q: What are the prime factors of the number 170,205,056?

 A: 2, 7, 189961

Why are those the prime factors of the number 170,205,056?

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 170,205,056

170,205,056
Factor Arrows
285,102,528
Factor Arrows
242,551,264
Factor Arrows
221,275,632
Factor Arrows
210,637,816
Factor Arrows
25,318,908
Factor Arrows
22,659,454
Factor Arrows
21,329,727
Factor Arrows
7189,961

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, 7, 189961

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 189,961 = 170,205,056

This can also be written as 27 x 71 x 189,9611 = 170,205,056

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


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