Q: What are the prime factors of the number 664,122,400?

 A: 2, 5, 830153

Why are those the prime factors of the number 664,122,400?

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 664,122,400

664,122,400
Factor Arrows
2332,061,200
Factor Arrows
2166,030,600
Factor Arrows
283,015,300
Factor Arrows
241,507,650
Factor Arrows
220,753,825
Factor Arrows
54,150,765
Factor Arrows
5830,153

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, 830153

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 5 x 830,153 = 664,122,400

This can also be written as 25 x 52 x 830,1531 = 664,122,400

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


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