Q: What are the prime factors of the number 765,565,856?

 A: 2, 11, 23, 94561

Why are those the prime factors of the number 765,565,856?

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 765,565,856

765,565,856
Factor Arrows
2382,782,928
Factor Arrows
2191,391,464
Factor Arrows
295,695,732
Factor Arrows
247,847,866
Factor Arrows
223,923,933
Factor Arrows
112,174,903
Factor Arrows
2394,561

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, 11, 23, 94561

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 23 x 94,561 = 765,565,856

This can also be written as 25 x 111 x 231 x 94,5611 = 765,565,856

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


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