Q: What are the prime factors of the number 505,025,311?

 A: 7, 641, 2297

Why are those the prime factors of the number 505,025,311?

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 505,025,311

505,025,311
Factor Arrows
772,146,473
Factor Arrows
710,306,639
Factor Arrows
71,472,377
Factor Arrows
6412,297

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:

7, 641, 2297

We can check our work by multiplying all of the prime factors together: 7 x 7 x 7 x 641 x 2,297 = 505,025,311

This can also be written as 73 x 6411 x 2,2971 = 505,025,311

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


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