Q: What are the prime factors of the number 331,413,156?

 A: 2, 3, 587, 15683

Why are those the prime factors of the number 331,413,156?

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 331,413,156

331,413,156
Factor Arrows
2165,706,578
Factor Arrows
282,853,289
Factor Arrows
327,617,763
Factor Arrows
39,205,921
Factor Arrows
58715,683

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, 587, 15683

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 587 x 15,683 = 331,413,156

This can also be written as 22 x 32 x 5871 x 15,6831 = 331,413,156

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


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