Q: Is 18,978 a Prime Number?
A: No, 18,978 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 18978 can be evenly divided by 1 2 3 6 3,163 6,326 9,489 and 18,978, with no remainder.
Since 18,978 cannot be divided by just 1 and 18,978, it is not a prime number.