Q: What are the prime factors of the number 321,313,104?

 A: 2, 3, 7, 19, 883

Why are those the prime factors of the number 321,313,104?

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 321,313,104

321,313,104
Factor Arrows
2160,656,552
Factor Arrows
280,328,276
Factor Arrows
240,164,138
Factor Arrows
220,082,069
Factor Arrows
36,694,023
Factor Arrows
32,231,341
Factor Arrows
7318,763
Factor Arrows
1916,777
Factor Arrows
19883

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, 7, 19, 883

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 7 x 19 x 19 x 883 = 321,313,104

This can also be written as 24 x 32 x 71 x 192 x 8831 = 321,313,104

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


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