Q: What are the prime factors of the number 423,422,304?

 A: 2, 3, 31, 79, 1801

Why are those the prime factors of the number 423,422,304?

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 423,422,304

423,422,304
Factor Arrows
2211,711,152
Factor Arrows
2105,855,576
Factor Arrows
252,927,788
Factor Arrows
226,463,894
Factor Arrows
213,231,947
Factor Arrows
34,410,649
Factor Arrows
31142,279
Factor Arrows
791,801

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, 31, 79, 1801

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 31 x 79 x 1,801 = 423,422,304

This can also be written as 25 x 31 x 311 x 791 x 1,8011 = 423,422,304

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


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