Q: What are the prime factors of the number 31,788,612?

 A: 2, 3, 41, 2393

Why are those the prime factors of the number 31,788,612?

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 31,788,612

31,788,612
Factor Arrows
215,894,306
Factor Arrows
27,947,153
Factor Arrows
32,649,051
Factor Arrows
3883,017
Factor Arrows
3294,339
Factor Arrows
398,113
Factor Arrows
412,393

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, 41, 2393

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 41 x 2,393 = 31,788,612

This can also be written as 22 x 34 x 411 x 2,3931 = 31,788,612

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


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