Q: Is 16,563 a Prime Number?
A: No, 16,563 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 16563 can be evenly divided by 1 3 5,521 and 16,563, with no remainder.
Since 16,563 cannot be divided by just 1 and 16,563, it is not a prime number.