Q: What are the prime factors of the number 734,643?

 A: 3, 7, 13, 23

Why are those the prime factors of the number 734,643?

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 734,643

734,643
Factor Arrows
3244,881
Factor Arrows
381,627
Factor Arrows
327,209
Factor Arrows
73,887
Factor Arrows
13299
Factor Arrows
1323

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:

3, 7, 13, 23

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 13 x 13 x 23 = 734,643

This can also be written as 33 x 71 x 132 x 231 = 734,643

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


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