Q: Is 505,666 a Prime Number?
A: No, 505,666 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 505666 can be evenly divided by 1 2 7 14 19 38 133 266 1,901 3,802 13,307 26,614 36,119 72,238 252,833 and 505,666, with no remainder.
Since 505,666 cannot be divided by just 1 and 505,666, it is not a prime number.