Q: What are the prime factors of the number 423,621,264?

 A: 2, 3, 11, 19, 42227

Why are those the prime factors of the number 423,621,264?

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 423,621,264

423,621,264
Factor Arrows
2211,810,632
Factor Arrows
2105,905,316
Factor Arrows
252,952,658
Factor Arrows
226,476,329
Factor Arrows
38,825,443
Factor Arrows
11802,313
Factor Arrows
1942,227

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, 11, 19, 42227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 19 x 42,227 = 423,621,264

This can also be written as 24 x 31 x 111 x 191 x 42,2271 = 423,621,264

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


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