Q: What are the prime factors of the number 172,067,904?

 A: 2, 3, 29, 10301

Why are those the prime factors of the number 172,067,904?

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 172,067,904

172,067,904
Factor Arrows
286,033,952
Factor Arrows
243,016,976
Factor Arrows
221,508,488
Factor Arrows
210,754,244
Factor Arrows
25,377,122
Factor Arrows
22,688,561
Factor Arrows
3896,187
Factor Arrows
3298,729
Factor Arrows
2910,301

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, 29, 10301

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 3 x 3 x 29 x 10,301 = 172,067,904

This can also be written as 26 x 32 x 291 x 10,3011 = 172,067,904

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


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