Q: What are the prime factors of the number 321,153,152?

 A: 2, 613, 4093

Why are those the prime factors of the number 321,153,152?

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 321,153,152

321,153,152
Factor Arrows
2160,576,576
Factor Arrows
280,288,288
Factor Arrows
240,144,144
Factor Arrows
220,072,072
Factor Arrows
210,036,036
Factor Arrows
25,018,018
Factor Arrows
22,509,009
Factor Arrows
6134,093

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, 613, 4093

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 613 x 4,093 = 321,153,152

This can also be written as 27 x 6131 x 4,0931 = 321,153,152

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


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