Q: What are the prime factors of the number 177,856,470?

 A: 2, 3, 5, 11, 23, 73, 107

Why are those the prime factors of the number 177,856,470?

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 177,856,470

177,856,470
Factor Arrows
288,928,235
Factor Arrows
329,642,745
Factor Arrows
39,880,915
Factor Arrows
51,976,183
Factor Arrows
11179,653
Factor Arrows
237,811
Factor Arrows
73107

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, 23, 73, 107

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 11 x 23 x 73 x 107 = 177,856,470

This can also be written as 21 x 32 x 51 x 111 x 231 x 731 x 1071 = 177,856,470

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


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