Q: What are the prime factors of the number 11,230,380?

 A: 2, 3, 5, 7, 2971

Why are those the prime factors of the number 11,230,380?

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 11,230,380

11,230,380
Factor Arrows
25,615,190
Factor Arrows
22,807,595
Factor Arrows
3935,865
Factor Arrows
3311,955
Factor Arrows
3103,985
Factor Arrows
520,797
Factor Arrows
72,971

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, 7, 2971

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 7 x 2,971 = 11,230,380

This can also be written as 22 x 33 x 51 x 71 x 2,9711 = 11,230,380

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


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