Q: What are the prime factors of the number 312,325,403?

 A: 13, 31, 107, 7243

Why are those the prime factors of the number 312,325,403?

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 312,325,403

312,325,403
Factor Arrows
1324,025,031
Factor Arrows
31775,001
Factor Arrows
1077,243

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:

13, 31, 107, 7243

We can check our work by multiplying all of the prime factors together: 13 x 31 x 107 x 7,243 = 312,325,403

This can also be written as 131 x 311 x 1071 x 7,2431 = 312,325,403

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


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