Q: What are the prime factors of the number 423,433,440?

 A: 2, 3, 5, 98017

Why are those the prime factors of the number 423,433,440?

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 423,433,440

423,433,440
Factor Arrows
2211,716,720
Factor Arrows
2105,858,360
Factor Arrows
252,929,180
Factor Arrows
226,464,590
Factor Arrows
213,232,295
Factor Arrows
34,410,765
Factor Arrows
31,470,255
Factor Arrows
3490,085
Factor Arrows
598,017

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, 5, 98017

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 5 x 98,017 = 423,433,440

This can also be written as 25 x 33 x 51 x 98,0171 = 423,433,440

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


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