Q: Is 57,721 a Prime Number?
A: No, 57,721 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 57721 can be evenly divided by 1 197 293 and 57,721, with no remainder.
Since 57,721 cannot be divided by just 1 and 57,721, it is not a prime number.