Q: What are the prime factors of the number 7,789,184?

 A: 2, 13, 31, 151

Why are those the prime factors of the number 7,789,184?

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 7,789,184

7,789,184
Factor Arrows
23,894,592
Factor Arrows
21,947,296
Factor Arrows
2973,648
Factor Arrows
2486,824
Factor Arrows
2243,412
Factor Arrows
2121,706
Factor Arrows
260,853
Factor Arrows
134,681
Factor Arrows
31151

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, 31, 151

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 2 x 13 x 31 x 151 = 7,789,184

This can also be written as 27 x 131 x 311 x 1511 = 7,789,184

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


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