Q: Is 20,477 a Prime Number?
A: Yes, 20,477 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 20477 can be evenly divided by 1 and 20,477, with no remainder.
Since 20,477 can be divided by just 1 and 20,477, it is a prime number.