Q: Is 13,563 a Prime Number?
A: No, 13,563 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 13563 can be evenly divided by 1 3 9 11 33 99 137 411 1,233 1,507 4,521 and 13,563, with no remainder.
Since 13,563 cannot be divided by just 1 and 13,563, it is not a prime number.