Q: What are the prime factors of the number 31,310,016?

 A: 2, 3, 313, 521

Why are those the prime factors of the number 31,310,016?

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 31,310,016

31,310,016
Factor Arrows
215,655,008
Factor Arrows
27,827,504
Factor Arrows
23,913,752
Factor Arrows
21,956,876
Factor Arrows
2978,438
Factor Arrows
2489,219
Factor Arrows
3163,073
Factor Arrows
313521

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, 313, 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 3 x 313 x 521 = 31,310,016

This can also be written as 26 x 31 x 3131 x 5211 = 31,310,016

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


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