Q: What are the prime factors of the number 421,022,304?

 A: 2, 3, 1461883

Why are those the prime factors of the number 421,022,304?

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 421,022,304

421,022,304
Factor Arrows
2210,511,152
Factor Arrows
2105,255,576
Factor Arrows
252,627,788
Factor Arrows
226,313,894
Factor Arrows
213,156,947
Factor Arrows
34,385,649
Factor Arrows
31,461,883

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, 1461883

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 1,461,883 = 421,022,304

This can also be written as 25 x 32 x 1,461,8831 = 421,022,304

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


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