Q: Is 166,604 a Prime Number?
A: No, 166,604 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 166604 can be evenly divided by 1 2 4 41,651 83,302 and 166,604, with no remainder.
Since 166,604 cannot be divided by just 1 and 166,604, it is not a prime number.