Q: What are the prime factors of the number 331,002,001?

 A: 11, 137, 157, 1399

Why are those the prime factors of the number 331,002,001?

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 331,002,001

331,002,001
Factor Arrows
1130,091,091
Factor Arrows
137219,643
Factor Arrows
1571,399

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:

11, 137, 157, 1399

We can check our work by multiplying all of the prime factors together: 11 x 137 x 157 x 1,399 = 331,002,001

This can also be written as 111 x 1371 x 1571 x 1,3991 = 331,002,001

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


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