Q: What are the prime factors of the number 3,040,000?

 A: 2, 5, 19

Why are those the prime factors of the number 3,040,000?

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 3,040,000

3,040,000
Factor Arrows
21,520,000
Factor Arrows
2760,000
Factor Arrows
2380,000
Factor Arrows
2190,000
Factor Arrows
295,000
Factor Arrows
247,500
Factor Arrows
223,750
Factor Arrows
211,875
Factor Arrows
52,375
Factor Arrows
5475
Factor Arrows
595
Factor Arrows
519

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, 5, 19

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 2 x 5 x 5 x 5 x 5 x 19 = 3,040,000

This can also be written as 28 x 54 x 191 = 3,040,000

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


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