Q: What are the prime factors of the number 765,016,551?

 A: 3, 13, 19, 37, 71, 131

Why are those the prime factors of the number 765,016,551?

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 765,016,551

765,016,551
Factor Arrows
3255,005,517
Factor Arrows
385,001,839
Factor Arrows
136,538,603
Factor Arrows
19344,137
Factor Arrows
379,301
Factor Arrows
71131

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, 13, 19, 37, 71, 131

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 19 x 37 x 71 x 131 = 765,016,551

This can also be written as 32 x 131 x 191 x 371 x 711 x 1311 = 765,016,551

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


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