Q: What are the prime factors of the number 11,390,080?

 A: 2, 5, 13, 37

Why are those the prime factors of the number 11,390,080?

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 11,390,080

11,390,080
Factor Arrows
25,695,040
Factor Arrows
22,847,520
Factor Arrows
21,423,760
Factor Arrows
2711,880
Factor Arrows
2355,940
Factor Arrows
2177,970
Factor Arrows
288,985
Factor Arrows
517,797
Factor Arrows
131,369
Factor Arrows
3737

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, 13, 37

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 13 x 37 x 37 = 11,390,080

This can also be written as 27 x 51 x 131 x 372 = 11,390,080

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


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