Q: What are the prime factors of the number 2,549,040?

 A: 2, 3, 5, 13, 19, 43

Why are those the prime factors of the number 2,549,040?

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 2,549,040

2,549,040
Factor Arrows
21,274,520
Factor Arrows
2637,260
Factor Arrows
2318,630
Factor Arrows
2159,315
Factor Arrows
353,105
Factor Arrows
510,621
Factor Arrows
13817
Factor Arrows
1943

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, 13, 19, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 13 x 19 x 43 = 2,549,040

This can also be written as 24 x 31 x 51 x 131 x 191 x 431 = 2,549,040

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


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