Q: What are the prime factors of the number 777,152?

 A: 2, 12143

Why are those the prime factors of the number 777,152?

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 777,152

777,152
Factor Arrows
2388,576
Factor Arrows
2194,288
Factor Arrows
297,144
Factor Arrows
248,572
Factor Arrows
224,286
Factor Arrows
212,143

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, 12143

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 12,143 = 777,152

This can also be written as 26 x 12,1431 = 777,152

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


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