Q: What are the prime factors of the number 644,033,200?

 A: 2, 5, 1610083

Why are those the prime factors of the number 644,033,200?

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 644,033,200

644,033,200
Factor Arrows
2322,016,600
Factor Arrows
2161,008,300
Factor Arrows
280,504,150
Factor Arrows
240,252,075
Factor Arrows
58,050,415
Factor Arrows
51,610,083

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, 1610083

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 1,610,083 = 644,033,200

This can also be written as 24 x 52 x 1,610,0831 = 644,033,200

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


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