Q: What are the prime factors of the number 11,180,736?

 A: 2, 3, 7, 47, 59

Why are those the prime factors of the number 11,180,736?

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 11,180,736

11,180,736
Factor Arrows
25,590,368
Factor Arrows
22,795,184
Factor Arrows
21,397,592
Factor Arrows
2698,796
Factor Arrows
2349,398
Factor Arrows
2174,699
Factor Arrows
358,233
Factor Arrows
319,411
Factor Arrows
72,773
Factor Arrows
4759

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, 7, 47, 59

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 3 x 7 x 47 x 59 = 11,180,736

This can also be written as 26 x 32 x 71 x 471 x 591 = 11,180,736

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


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