Q: What are the prime factors of the number 177,123,345?

 A: 3, 5, 7, 23, 71, 1033

Why are those the prime factors of the number 177,123,345?

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 177,123,345

177,123,345
Factor Arrows
359,041,115
Factor Arrows
511,808,223
Factor Arrows
71,686,889
Factor Arrows
2373,343
Factor Arrows
711,033

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:

3, 5, 7, 23, 71, 1033

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 23 x 71 x 1,033 = 177,123,345

This can also be written as 31 x 51 x 71 x 231 x 711 x 1,0331 = 177,123,345

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


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