Q: What are the prime factors of the number 131,440,342?

 A: 2, 11, 41, 145721

Why are those the prime factors of the number 131,440,342?

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 131,440,342

131,440,342
Factor Arrows
265,720,171
Factor Arrows
115,974,561
Factor Arrows
41145,721

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, 11, 41, 145721

We can check our work by multiplying all of the prime factors together: 2 x 11 x 41 x 145,721 = 131,440,342

This can also be written as 21 x 111 x 411 x 145,7211 = 131,440,342

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


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