Q: What are the prime factors of the number 434,603,640?

 A: 2, 3, 5, 17, 163, 1307

Why are those the prime factors of the number 434,603,640?

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 434,603,640

434,603,640
Factor Arrows
2217,301,820
Factor Arrows
2108,650,910
Factor Arrows
254,325,455
Factor Arrows
318,108,485
Factor Arrows
53,621,697
Factor Arrows
17213,041
Factor Arrows
1631,307

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, 17, 163, 1307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 17 x 163 x 1,307 = 434,603,640

This can also be written as 23 x 31 x 51 x 171 x 1631 x 1,3071 = 434,603,640

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


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