Q: Is 21,373 a Prime Number?
A: No, 21,373 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 21373 can be evenly divided by 1 11 29 67 319 737 1,943 and 21,373, with no remainder.
Since 21,373 cannot be divided by just 1 and 21,373, it is not a prime number.