Q: What are the prime factors of the number 31,332,480?

 A: 2, 3, 5, 16319

Why are those the prime factors of the number 31,332,480?

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 31,332,480

31,332,480
Factor Arrows
215,666,240
Factor Arrows
27,833,120
Factor Arrows
23,916,560
Factor Arrows
21,958,280
Factor Arrows
2979,140
Factor Arrows
2489,570
Factor Arrows
2244,785
Factor Arrows
381,595
Factor Arrows
516,319

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, 16319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 16,319 = 31,332,480

This can also be written as 27 x 31 x 51 x 16,3191 = 31,332,480

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


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