Q: What are the prime factors of the number 12,583,040?

 A: 2, 5, 19661

Why are those the prime factors of the number 12,583,040?

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 12,583,040

12,583,040
Factor Arrows
26,291,520
Factor Arrows
23,145,760
Factor Arrows
21,572,880
Factor Arrows
2786,440
Factor Arrows
2393,220
Factor Arrows
2196,610
Factor Arrows
298,305
Factor Arrows
519,661

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, 19661

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 5 x 19,661 = 12,583,040

This can also be written as 27 x 51 x 19,6611 = 12,583,040

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


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