Q: What are the prime factors of the number 764,563,120?

 A: 2, 5, 173, 55243

Why are those the prime factors of the number 764,563,120?

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 764,563,120

764,563,120
Factor Arrows
2382,281,560
Factor Arrows
2191,140,780
Factor Arrows
295,570,390
Factor Arrows
247,785,195
Factor Arrows
59,557,039
Factor Arrows
17355,243

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, 173, 55243

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 173 x 55,243 = 764,563,120

This can also be written as 24 x 51 x 1731 x 55,2431 = 764,563,120

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


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