Q: What are the prime factors of the number 777,738?

 A: 2, 3, 13, 59

Why are those the prime factors of the number 777,738?

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 777,738

777,738
Factor Arrows
2388,869
Factor Arrows
3129,623
Factor Arrows
139,971
Factor Arrows
13767
Factor Arrows
1359

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, 3, 13, 59

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 13 x 13 x 59 = 777,738

This can also be written as 21 x 31 x 133 x 591 = 777,738

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


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