Q: What are the prime factors of the number 11,020,160?

 A: 2, 5, 67, 257

Why are those the prime factors of the number 11,020,160?

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 11,020,160

11,020,160
Factor Arrows
25,510,080
Factor Arrows
22,755,040
Factor Arrows
21,377,520
Factor Arrows
2688,760
Factor Arrows
2344,380
Factor Arrows
2172,190
Factor Arrows
286,095
Factor Arrows
517,219
Factor Arrows
67257

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, 5, 67, 257

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 2 x 5 x 67 x 257 = 11,020,160

This can also be written as 27 x 51 x 671 x 2571 = 11,020,160

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


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