Q: What are the prime factors of the number 322,438,424?

 A: 2, 7, 11, 37, 43, 47

Why are those the prime factors of the number 322,438,424?

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 322,438,424

322,438,424
Factor Arrows
2161,219,212
Factor Arrows
280,609,606
Factor Arrows
240,304,803
Factor Arrows
75,757,829
Factor Arrows
7822,547
Factor Arrows
1174,777
Factor Arrows
372,021
Factor Arrows
4347

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, 7, 11, 37, 43, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 11 x 37 x 43 x 47 = 322,438,424

This can also be written as 23 x 72 x 111 x 371 x 431 x 471 = 322,438,424

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


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