Q: What are the prime factors of the number 31,322,112?

 A: 2, 3, 2549

Why are those the prime factors of the number 31,322,112?

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 31,322,112

31,322,112
Factor Arrows
215,661,056
Factor Arrows
27,830,528
Factor Arrows
23,915,264
Factor Arrows
21,957,632
Factor Arrows
2978,816
Factor Arrows
2489,408
Factor Arrows
2244,704
Factor Arrows
2122,352
Factor Arrows
261,176
Factor Arrows
230,588
Factor Arrows
215,294
Factor Arrows
27,647
Factor Arrows
32,549

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, 2549

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 2 x 2 x 2 x 2 x 2 x 3 x 2,549 = 31,322,112

This can also be written as 212 x 31 x 2,5491 = 31,322,112

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


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