Q: What are the prime factors of the number 11,451,120?

 A: 2, 3, 5, 47713

Why are those the prime factors of the number 11,451,120?

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 11,451,120

11,451,120
Factor Arrows
25,725,560
Factor Arrows
22,862,780
Factor Arrows
21,431,390
Factor Arrows
2715,695
Factor Arrows
3238,565
Factor Arrows
547,713

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, 47713

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 47,713 = 11,451,120

This can also be written as 24 x 31 x 51 x 47,7131 = 11,451,120

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


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