Q: What are the prime factors of the number 785,082,064?

 A: 2, 13, 199, 1459

Why are those the prime factors of the number 785,082,064?

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 785,082,064

785,082,064
Factor Arrows
2392,541,032
Factor Arrows
2196,270,516
Factor Arrows
298,135,258
Factor Arrows
249,067,629
Factor Arrows
133,774,433
Factor Arrows
13290,341
Factor Arrows
1991,459

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, 13, 199, 1459

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 13 x 199 x 1,459 = 785,082,064

This can also be written as 24 x 132 x 1991 x 1,4591 = 785,082,064

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


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