Q: Is 211,978 a Prime Number?
A: No, 211,978 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 211978 can be evenly divided by 1 2 13 26 31 62 263 403 526 806 3,419 6,838 8,153 16,306 105,989 and 211,978, with no remainder.
Since 211,978 cannot be divided by just 1 and 211,978, it is not a prime number.