Q: What are the prime factors of the number 11,323,440?

 A: 2, 3, 5, 15727

Why are those the prime factors of the number 11,323,440?

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 11,323,440

11,323,440
Factor Arrows
25,661,720
Factor Arrows
22,830,860
Factor Arrows
21,415,430
Factor Arrows
2707,715
Factor Arrows
3235,905
Factor Arrows
378,635
Factor Arrows
515,727

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, 15727

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 15,727 = 11,323,440

This can also be written as 24 x 32 x 51 x 15,7271 = 11,323,440

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


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