Q: What are the prime factors of the number 769,720?

 A: 2, 5, 7, 2749

Why are those the prime factors of the number 769,720?

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 769,720

769,720
Factor Arrows
2384,860
Factor Arrows
2192,430
Factor Arrows
296,215
Factor Arrows
519,243
Factor Arrows
72,749

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, 5, 7, 2749

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 2,749 = 769,720

This can also be written as 23 x 51 x 71 x 2,7491 = 769,720

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


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