Q: What are the prime factors of the number 11,099,880?

 A: 2, 3, 5, 11, 2803

Why are those the prime factors of the number 11,099,880?

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 11,099,880

11,099,880
Factor Arrows
25,549,940
Factor Arrows
22,774,970
Factor Arrows
21,387,485
Factor Arrows
3462,495
Factor Arrows
3154,165
Factor Arrows
530,833
Factor Arrows
112,803

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, 5, 11, 2803

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 11 x 2,803 = 11,099,880

This can also be written as 23 x 32 x 51 x 111 x 2,8031 = 11,099,880

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


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