Q: What are the prime factors of the number 309,184?

 A: 2, 4831

Why are those the prime factors of the number 309,184?

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 309,184

309,184
Factor Arrows
2154,592
Factor Arrows
277,296
Factor Arrows
238,648
Factor Arrows
219,324
Factor Arrows
29,662
Factor Arrows
24,831

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, 4831

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 4,831 = 309,184

This can also be written as 26 x 4,8311 = 309,184

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


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