Q: What are the prime factors of the number 31,903,944?

 A: 2, 3, 23, 29, 1993

Why are those the prime factors of the number 31,903,944?

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 31,903,944

31,903,944
Factor Arrows
215,951,972
Factor Arrows
27,975,986
Factor Arrows
23,987,993
Factor Arrows
31,329,331
Factor Arrows
2357,797
Factor Arrows
291,993

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, 23, 29, 1993

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 23 x 29 x 1,993 = 31,903,944

This can also be written as 23 x 31 x 231 x 291 x 1,9931 = 31,903,944

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


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