Q: What are the prime factors of the number 3,731,040?

 A: 2, 3, 5, 2591

Why are those the prime factors of the number 3,731,040?

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 3,731,040

3,731,040
Factor Arrows
21,865,520
Factor Arrows
2932,760
Factor Arrows
2466,380
Factor Arrows
2233,190
Factor Arrows
2116,595
Factor Arrows
338,865
Factor Arrows
312,955
Factor Arrows
52,591

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, 2591

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 2,591 = 3,731,040

This can also be written as 25 x 32 x 51 x 2,5911 = 3,731,040

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


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