Q: What are the prime factors of the number 345,131,424?

 A: 2, 3, 11, 108943

Why are those the prime factors of the number 345,131,424?

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 345,131,424

345,131,424
Factor Arrows
2172,565,712
Factor Arrows
286,282,856
Factor Arrows
243,141,428
Factor Arrows
221,570,714
Factor Arrows
210,785,357
Factor Arrows
33,595,119
Factor Arrows
31,198,373
Factor Arrows
11108,943

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, 11, 108943

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 108,943 = 345,131,424

This can also be written as 25 x 32 x 111 x 108,9431 = 345,131,424

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


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