Q: What are the prime factors of the number 768,040,845?

 A: 3, 5, 11, 13, 43, 757

Why are those the prime factors of the number 768,040,845?

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 768,040,845

768,040,845
Factor Arrows
3256,013,615
Factor Arrows
551,202,723
Factor Arrows
114,654,793
Factor Arrows
11423,163
Factor Arrows
1332,551
Factor Arrows
43757

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:

3, 5, 11, 13, 43, 757

We can check our work by multiplying all of the prime factors together: 3 x 5 x 11 x 11 x 13 x 43 x 757 = 768,040,845

This can also be written as 31 x 51 x 112 x 131 x 431 x 7571 = 768,040,845

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


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