Q: What are the prime factors of the number 764,706,320?

 A: 2, 5, 7, 1365547

Why are those the prime factors of the number 764,706,320?

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 764,706,320

764,706,320
Factor Arrows
2382,353,160
Factor Arrows
2191,176,580
Factor Arrows
295,588,290
Factor Arrows
247,794,145
Factor Arrows
59,558,829
Factor Arrows
71,365,547

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, 7, 1365547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 1,365,547 = 764,706,320

This can also be written as 24 x 51 x 71 x 1,365,5471 = 764,706,320

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


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