Q: What are the prime factors of the number 31,020,352?

 A: 2, 11, 139, 317

Why are those the prime factors of the number 31,020,352?

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 31,020,352

31,020,352
Factor Arrows
215,510,176
Factor Arrows
27,755,088
Factor Arrows
23,877,544
Factor Arrows
21,938,772
Factor Arrows
2969,386
Factor Arrows
2484,693
Factor Arrows
1144,063
Factor Arrows
139317

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, 11, 139, 317

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 11 x 139 x 317 = 31,020,352

This can also be written as 26 x 111 x 1391 x 3171 = 31,020,352

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


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