Q: Is 311,921 a Prime Number?
A: No, 311,921 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 311921 can be evenly divided by 1 271 1,151 and 311,921, with no remainder.
Since 311,921 cannot be divided by just 1 and 311,921, it is not a prime number.