Q: What are the prime factors of the number 770,527,872?

 A: 2, 3, 67, 149

Why are those the prime factors of the number 770,527,872?

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 770,527,872

770,527,872
Factor Arrows
2385,263,936
Factor Arrows
2192,631,968
Factor Arrows
296,315,984
Factor Arrows
248,157,992
Factor Arrows
224,078,996
Factor Arrows
212,039,498
Factor Arrows
26,019,749
Factor Arrows
32,006,583
Factor Arrows
3668,861
Factor Arrows
679,983
Factor Arrows
67149

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, 67, 149

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 2 x 3 x 3 x 67 x 67 x 149 = 770,527,872

This can also be written as 27 x 32 x 672 x 1491 = 770,527,872

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


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