Q: What are the prime factors of the number 307,722,129?

 A: 3, 11, 13, 23, 2399

Why are those the prime factors of the number 307,722,129?

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 307,722,129

307,722,129
Factor Arrows
3102,574,043
Factor Arrows
119,324,913
Factor Arrows
13717,301
Factor Arrows
1355,177
Factor Arrows
232,399

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:

3, 11, 13, 23, 2399

We can check our work by multiplying all of the prime factors together: 3 x 11 x 13 x 13 x 23 x 2,399 = 307,722,129

This can also be written as 31 x 111 x 132 x 231 x 2,3991 = 307,722,129

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


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