Q: Is 505,943 a Prime Number?
A: No, 505,943 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 505943 can be evenly divided by 1 383 1,321 and 505,943, with no remainder.
Since 505,943 cannot be divided by just 1 and 505,943, it is not a prime number.