Q: Is 512,391 a Prime Number?
A: No, 512,391 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 512391 can be evenly divided by 1 3 11 33 15,527 46,581 170,797 and 512,391, with no remainder.
Since 512,391 cannot be divided by just 1 and 512,391, it is not a prime number.