Q: What are the prime factors of the number 12,791,364?

 A: 2, 3, 79, 103, 131

Why are those the prime factors of the number 12,791,364?

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 12,791,364

12,791,364
Factor Arrows
26,395,682
Factor Arrows
23,197,841
Factor Arrows
31,065,947
Factor Arrows
7913,493
Factor Arrows
103131

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, 79, 103, 131

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 79 x 103 x 131 = 12,791,364

This can also be written as 22 x 31 x 791 x 1031 x 1311 = 12,791,364

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


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