Q: What are the prime factors of the number 31,380,064?

 A: 2, 79, 12413

Why are those the prime factors of the number 31,380,064?

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 31,380,064

31,380,064
Factor Arrows
215,690,032
Factor Arrows
27,845,016
Factor Arrows
23,922,508
Factor Arrows
21,961,254
Factor Arrows
2980,627
Factor Arrows
7912,413

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, 79, 12413

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 79 x 12,413 = 31,380,064

This can also be written as 25 x 791 x 12,4131 = 31,380,064

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


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