Q: What are the prime factors of the number 80,408?

 A: 2, 19, 23

Why are those the prime factors of the number 80,408?

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 80,408

80,408
Factor Arrows
240,204
Factor Arrows
220,102
Factor Arrows
210,051
Factor Arrows
19529
Factor Arrows
2323

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, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 19 x 23 x 23 = 80,408

This can also be written as 23 x 191 x 232 = 80,408

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


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