Q: What are the prime factors of the number 29,921,632?

 A: 2, 13, 17, 4231

Why are those the prime factors of the number 29,921,632?

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 29,921,632

29,921,632
Factor Arrows
214,960,816
Factor Arrows
27,480,408
Factor Arrows
23,740,204
Factor Arrows
21,870,102
Factor Arrows
2935,051
Factor Arrows
1371,927
Factor Arrows
174,231

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, 13, 17, 4231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 17 x 4,231 = 29,921,632

This can also be written as 25 x 131 x 171 x 4,2311 = 29,921,632

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


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