Q: What are the prime factors of the number 31,042,224?

 A: 2, 3, 181, 397

Why are those the prime factors of the number 31,042,224?

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 31,042,224

31,042,224
Factor Arrows
215,521,112
Factor Arrows
27,760,556
Factor Arrows
23,880,278
Factor Arrows
21,940,139
Factor Arrows
3646,713
Factor Arrows
3215,571
Factor Arrows
371,857
Factor Arrows
181397

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, 181, 397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 181 x 397 = 31,042,224

This can also be written as 24 x 33 x 1811 x 3971 = 31,042,224

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


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