Q: Is 21,965 a Prime Number?
A: No, 21,965 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 21965 can be evenly divided by 1 5 23 115 191 955 4,393 and 21,965, with no remainder.
Since 21,965 cannot be divided by just 1 and 21,965, it is not a prime number.