Q: What are the prime factors of the number 31,042,216?

 A: 2, 43, 90239

Why are those the prime factors of the number 31,042,216?

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 31,042,216

31,042,216
Factor Arrows
215,521,108
Factor Arrows
27,760,554
Factor Arrows
23,880,277
Factor Arrows
4390,239

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, 43, 90239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 43 x 90,239 = 31,042,216

This can also be written as 23 x 431 x 90,2391 = 31,042,216

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


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