Q: What are the prime factors of the number 133,523,424?

 A: 2, 3, 29, 73

Why are those the prime factors of the number 133,523,424?

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 133,523,424

133,523,424
Factor Arrows
266,761,712
Factor Arrows
233,380,856
Factor Arrows
216,690,428
Factor Arrows
28,345,214
Factor Arrows
24,172,607
Factor Arrows
31,390,869
Factor Arrows
3463,623
Factor Arrows
3154,541
Factor Arrows
295,329
Factor Arrows
7373

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, 29, 73

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 3 x 3 x 29 x 73 x 73 = 133,523,424

This can also be written as 25 x 33 x 291 x 732 = 133,523,424

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


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