Q: What are the prime factors of the number 3,426,120?

 A: 2, 3, 5, 31, 307

Why are those the prime factors of the number 3,426,120?

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 3,426,120

3,426,120
Factor Arrows
21,713,060
Factor Arrows
2856,530
Factor Arrows
2428,265
Factor Arrows
3142,755
Factor Arrows
347,585
Factor Arrows
59,517
Factor Arrows
31307

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, 5, 31, 307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 31 x 307 = 3,426,120

This can also be written as 23 x 32 x 51 x 311 x 3071 = 3,426,120

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


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