Q: Is 509,791 a Prime Number?
A: No, 509,791 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 509791 can be evenly divided by 1 29 17,579 and 509,791, with no remainder.
Since 509,791 cannot be divided by just 1 and 509,791, it is not a prime number.