Q: What are the prime factors of the number 31,043,264?

 A: 2, 7, 19, 521

Why are those the prime factors of the number 31,043,264?

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 31,043,264

31,043,264
Factor Arrows
215,521,632
Factor Arrows
27,760,816
Factor Arrows
23,880,408
Factor Arrows
21,940,204
Factor Arrows
2970,102
Factor Arrows
2485,051
Factor Arrows
769,293
Factor Arrows
79,899
Factor Arrows
19521

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, 7, 19, 521

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 7 x 7 x 19 x 521 = 31,043,264

This can also be written as 26 x 72 x 191 x 5211 = 31,043,264

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


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