Q: What are the prime factors of the number 10,720,158?

 A: 2, 3, 37, 43, 1123

Why are those the prime factors of the number 10,720,158?

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 10,720,158

10,720,158
Factor Arrows
25,360,079
Factor Arrows
31,786,693
Factor Arrows
3748,289
Factor Arrows
431,123

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, 37, 43, 1123

We can check our work by multiplying all of the prime factors together: 2 x 3 x 37 x 43 x 1,123 = 10,720,158

This can also be written as 21 x 31 x 371 x 431 x 1,1231 = 10,720,158

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


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