Q: What are the prime factors of the number 424,121,440?

 A: 2, 5, 17, 241, 647

Why are those the prime factors of the number 424,121,440?

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 424,121,440

424,121,440
Factor Arrows
2212,060,720
Factor Arrows
2106,030,360
Factor Arrows
253,015,180
Factor Arrows
226,507,590
Factor Arrows
213,253,795
Factor Arrows
52,650,759
Factor Arrows
17155,927
Factor Arrows
241647

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, 5, 17, 241, 647

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 17 x 241 x 647 = 424,121,440

This can also be written as 25 x 51 x 171 x 2411 x 6471 = 424,121,440

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


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