Q: What are the prime factors of the number 3,982,875?

 A: 3, 5, 13, 19, 43

Why are those the prime factors of the number 3,982,875?

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 3,982,875

3,982,875
Factor Arrows
31,327,625
Factor Arrows
5265,525
Factor Arrows
553,105
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:

3, 5, 13, 19, 43

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 13 x 19 x 43 = 3,982,875

This can also be written as 31 x 53 x 131 x 191 x 431 = 3,982,875

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


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