Q: What are the prime factors of the number 777,192?

 A: 2, 3, 13, 47, 53

Why are those the prime factors of the number 777,192?

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 777,192

777,192
Factor Arrows
2388,596
Factor Arrows
2194,298
Factor Arrows
297,149
Factor Arrows
332,383
Factor Arrows
132,491
Factor Arrows
4753

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, 47, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 13 x 47 x 53 = 777,192

This can also be written as 23 x 31 x 131 x 471 x 531 = 777,192

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


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