Q: What are the prime factors of the number 784,846,557?

 A: 3, 11, 61, 43321

Why are those the prime factors of the number 784,846,557?

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 784,846,557

784,846,557
Factor Arrows
3261,615,519
Factor Arrows
387,205,173
Factor Arrows
329,068,391
Factor Arrows
112,642,581
Factor Arrows
6143,321

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, 11, 61, 43321

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 11 x 61 x 43,321 = 784,846,557

This can also be written as 33 x 111 x 611 x 43,3211 = 784,846,557

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


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