Q: Is 21,966 a Prime Number?
A: No, 21,966 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 21966 can be evenly divided by 1 2 3 6 7 14 21 42 523 1,046 1,569 3,138 3,661 7,322 10,983 and 21,966, with no remainder.
Since 21,966 cannot be divided by just 1 and 21,966, it is not a prime number.