Q: Is 21,477 a Prime Number?
A: No, 21,477 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 21477 can be evenly divided by 1 3 7,159 and 21,477, with no remainder.
Since 21,477 cannot be divided by just 1 and 21,477, it is not a prime number.