Q: What are the prime factors of the number 2,967,040?

 A: 2, 5, 19, 61

Why are those the prime factors of the number 2,967,040?

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 2,967,040

2,967,040
Factor Arrows
21,483,520
Factor Arrows
2741,760
Factor Arrows
2370,880
Factor Arrows
2185,440
Factor Arrows
292,720
Factor Arrows
246,360
Factor Arrows
223,180
Factor Arrows
211,590
Factor Arrows
25,795
Factor Arrows
51,159
Factor Arrows
1961

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, 61

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 2 x 5 x 19 x 61 = 2,967,040

This can also be written as 29 x 51 x 191 x 611 = 2,967,040

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


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