Q: Is 51 a Prime Number?
A: No, 51 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 51 can be evenly divided by 1 3 17 and 51, with no remainder.
Since 51 cannot be divided by just 1 and 51, it is not a prime number.