Q: What are the prime factors of the number 420,033,008?

 A: 2, 17, 89, 17351

Why are those the prime factors of the number 420,033,008?

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 420,033,008

420,033,008
Factor Arrows
2210,016,504
Factor Arrows
2105,008,252
Factor Arrows
252,504,126
Factor Arrows
226,252,063
Factor Arrows
171,544,239
Factor Arrows
8917,351

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, 17, 89, 17351

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 17 x 89 x 17,351 = 420,033,008

This can also be written as 24 x 171 x 891 x 17,3511 = 420,033,008

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


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