Q: What are the prime factors of the number 800,077,740?

 A: 2, 3, 5, 7, 11, 173177

Why are those the prime factors of the number 800,077,740?

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 800,077,740

800,077,740
Factor Arrows
2400,038,870
Factor Arrows
2200,019,435
Factor Arrows
366,673,145
Factor Arrows
513,334,629
Factor Arrows
71,904,947
Factor Arrows
11173,177

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, 7, 11, 173177

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 11 x 173,177 = 800,077,740

This can also be written as 22 x 31 x 51 x 71 x 111 x 173,1771 = 800,077,740

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


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