Q: Is 161,978 a Prime Number?
A: No, 161,978 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 161978 can be evenly divided by 1 2 80,989 and 161,978, with no remainder.
Since 161,978 cannot be divided by just 1 and 161,978, it is not a prime number.