Q: What are the prime factors of the number 331,352,242?

 A: 2, 13, 31, 37, 41, 271

Why are those the prime factors of the number 331,352,242?

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 331,352,242

331,352,242
Factor Arrows
2165,676,121
Factor Arrows
1312,744,317
Factor Arrows
31411,107
Factor Arrows
3711,111
Factor Arrows
41271

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, 13, 31, 37, 41, 271

We can check our work by multiplying all of the prime factors together: 2 x 13 x 31 x 37 x 41 x 271 = 331,352,242

This can also be written as 21 x 131 x 311 x 371 x 411 x 2711 = 331,352,242

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


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