Q: Is 16,556 a Prime Number?
A: No, 16,556 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 16556 can be evenly divided by 1 2 4 4,139 8,278 and 16,556, with no remainder.
Since 16,556 cannot be divided by just 1 and 16,556, it is not a prime number.