Q: What are the prime factors of the number 80,103,249?

 A: 3, 29, 421

Why are those the prime factors of the number 80,103,249?

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 80,103,249

80,103,249
Factor Arrows
326,701,083
Factor Arrows
38,900,361
Factor Arrows
32,966,787
Factor Arrows
3988,929
Factor Arrows
3329,643
Factor Arrows
3109,881
Factor Arrows
336,627
Factor Arrows
312,209
Factor Arrows
29421

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, 29, 421

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 29 x 421 = 80,103,249

This can also be written as 38 x 291 x 4211 = 80,103,249

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


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