Q: What are the prime factors of the number 3,935,184?

 A: 2, 3, 11, 29, 257

Why are those the prime factors of the number 3,935,184?

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 3,935,184

3,935,184
Factor Arrows
21,967,592
Factor Arrows
2983,796
Factor Arrows
2491,898
Factor Arrows
2245,949
Factor Arrows
381,983
Factor Arrows
117,453
Factor Arrows
29257

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, 3, 11, 29, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 29 x 257 = 3,935,184

This can also be written as 24 x 31 x 111 x 291 x 2571 = 3,935,184

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


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