Q: What are the prime factors of the number 424,413,312?

 A: 2, 3, 31, 101, 353

Why are those the prime factors of the number 424,413,312?

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 424,413,312

424,413,312
Factor Arrows
2212,206,656
Factor Arrows
2106,103,328
Factor Arrows
253,051,664
Factor Arrows
226,525,832
Factor Arrows
213,262,916
Factor Arrows
26,631,458
Factor Arrows
23,315,729
Factor Arrows
31,105,243
Factor Arrows
3135,653
Factor Arrows
101353

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, 101, 353

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 3 x 31 x 101 x 353 = 424,413,312

This can also be written as 27 x 31 x 311 x 1011 x 3531 = 424,413,312

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


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