Q: What are the prime factors of the number 11,551,554?

 A: 2, 3, 7, 1871

Why are those the prime factors of the number 11,551,554?

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 11,551,554

11,551,554
Factor Arrows
25,775,777
Factor Arrows
31,925,259
Factor Arrows
3641,753
Factor Arrows
791,679
Factor Arrows
713,097
Factor Arrows
71,871

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, 7, 1871

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 7 x 7 x 1,871 = 11,551,554

This can also be written as 21 x 32 x 73 x 1,8711 = 11,551,554

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


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