Q: What are the prime factors of the number 770,388?

 A: 2, 3, 43, 1493

Why are those the prime factors of the number 770,388?

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 770,388

770,388
Factor Arrows
2385,194
Factor Arrows
2192,597
Factor Arrows
364,199
Factor Arrows
431,493

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, 43, 1493

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 43 x 1,493 = 770,388

This can also be written as 22 x 31 x 431 x 1,4931 = 770,388

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


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