Q: What are the prime factors of the number 15,542,460?

 A: 2, 3, 5, 79, 1093

Why are those the prime factors of the number 15,542,460?

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 15,542,460

15,542,460
Factor Arrows
27,771,230
Factor Arrows
23,885,615
Factor Arrows
31,295,205
Factor Arrows
3431,735
Factor Arrows
586,347
Factor Arrows
791,093

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, 79, 1093

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 79 x 1,093 = 15,542,460

This can also be written as 22 x 32 x 51 x 791 x 1,0931 = 15,542,460

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


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