Q: What are the prime factors of the number 11,127,780?

 A: 2, 3, 5, 6869

Why are those the prime factors of the number 11,127,780?

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 11,127,780

11,127,780
Factor Arrows
25,563,890
Factor Arrows
22,781,945
Factor Arrows
3927,315
Factor Arrows
3309,105
Factor Arrows
3103,035
Factor Arrows
334,345
Factor Arrows
56,869

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, 6869

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 5 x 6,869 = 11,127,780

This can also be written as 22 x 34 x 51 x 6,8691 = 11,127,780

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


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