Q: What are the prime factors of the number 768,415,416?

 A: 2, 3, 199, 251, 641

Why are those the prime factors of the number 768,415,416?

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 768,415,416

768,415,416
Factor Arrows
2384,207,708
Factor Arrows
2192,103,854
Factor Arrows
296,051,927
Factor Arrows
332,017,309
Factor Arrows
199160,891
Factor Arrows
251641

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, 3, 199, 251, 641

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 199 x 251 x 641 = 768,415,416

This can also be written as 23 x 31 x 1991 x 2511 x 6411 = 768,415,416

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


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