Q: What are the prime factors of the number 320,130,304?

 A: 2, 13, 29, 31, 107

Why are those the prime factors of the number 320,130,304?

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 320,130,304

320,130,304
Factor Arrows
2160,065,152
Factor Arrows
280,032,576
Factor Arrows
240,016,288
Factor Arrows
220,008,144
Factor Arrows
210,004,072
Factor Arrows
25,002,036
Factor Arrows
22,501,018
Factor Arrows
21,250,509
Factor Arrows
1396,193
Factor Arrows
293,317
Factor Arrows
31107

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, 29, 31, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 13 x 29 x 31 x 107 = 320,130,304

This can also be written as 28 x 131 x 291 x 311 x 1071 = 320,130,304

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


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