Q: Is 20,404 a Prime Number?
A: No, 20,404 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 20404 can be evenly divided by 1 2 4 5,101 10,202 and 20,404, with no remainder.
Since 20,404 cannot be divided by just 1 and 20,404, it is not a prime number.