Q: Is 393 a Prime Number?
A: No, 393 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 393 can be evenly divided by 1 3 131 and 393, with no remainder.
Since 393 cannot be divided by just 1 and 393, it is not a prime number.