Q: What are the prime factors of the number 458,322,172?

 A: 2, 7, 11, 127, 11717

Why are those the prime factors of the number 458,322,172?

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 458,322,172

458,322,172
Factor Arrows
2229,161,086
Factor Arrows
2114,580,543
Factor Arrows
716,368,649
Factor Arrows
111,488,059
Factor Arrows
12711,717

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, 11, 127, 11717

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 11 x 127 x 11,717 = 458,322,172

This can also be written as 22 x 71 x 111 x 1271 x 11,7171 = 458,322,172

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


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