Q: Is 63 a Prime Number?
A: No, 63 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 63 can be evenly divided by 1 3 7 9 21 and 63, with no remainder.
Since 63 cannot be divided by just 1 and 63, it is not a prime number.