Q: What are the prime factors of the number 770,386,740?

 A: 2, 3, 5, 29, 373, 1187

Why are those the prime factors of the number 770,386,740?

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 770,386,740

770,386,740
Factor Arrows
2385,193,370
Factor Arrows
2192,596,685
Factor Arrows
364,198,895
Factor Arrows
512,839,779
Factor Arrows
29442,751
Factor Arrows
3731,187

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, 5, 29, 373, 1187

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 29 x 373 x 1,187 = 770,386,740

This can also be written as 22 x 31 x 51 x 291 x 3731 x 1,1871 = 770,386,740

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


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