Q: What are the prime factors of the number 764,761,424?

 A: 2, 7, 487, 2003

Why are those the prime factors of the number 764,761,424?

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 764,761,424

764,761,424
Factor Arrows
2382,380,712
Factor Arrows
2191,190,356
Factor Arrows
295,595,178
Factor Arrows
247,797,589
Factor Arrows
76,828,227
Factor Arrows
7975,461
Factor Arrows
4872,003

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, 7, 487, 2003

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 487 x 2,003 = 764,761,424

This can also be written as 24 x 72 x 4871 x 2,0031 = 764,761,424

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


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