Q: What are the prime factors of the number 12,791,404?

 A: 2, 23, 257, 541

Why are those the prime factors of the number 12,791,404?

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 12,791,404

12,791,404
Factor Arrows
26,395,702
Factor Arrows
23,197,851
Factor Arrows
23139,037
Factor Arrows
257541

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, 23, 257, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 23 x 257 x 541 = 12,791,404

This can also be written as 22 x 231 x 2571 x 5411 = 12,791,404

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


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