Q: Is 20,818 a Prime Number?
A: No, 20,818 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 20818 can be evenly divided by 1 2 7 14 1,487 2,974 10,409 and 20,818, with no remainder.
Since 20,818 cannot be divided by just 1 and 20,818, it is not a prime number.