Q: What are the prime factors of the number 780,708,680?

 A: 2, 5, 17, 191, 6011

Why are those the prime factors of the number 780,708,680?

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 780,708,680

780,708,680
Factor Arrows
2390,354,340
Factor Arrows
2195,177,170
Factor Arrows
297,588,585
Factor Arrows
519,517,717
Factor Arrows
171,148,101
Factor Arrows
1916,011

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, 17, 191, 6011

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17 x 191 x 6,011 = 780,708,680

This can also be written as 23 x 51 x 171 x 1911 x 6,0111 = 780,708,680

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


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