Q: Is 171,978 a Prime Number?
A: No, 171,978 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 171978 can be evenly divided by 1 2 3 6 28,663 57,326 85,989 and 171,978, with no remainder.
Since 171,978 cannot be divided by just 1 and 171,978, it is not a prime number.