Q: Is 16,665 a Prime Number?
A: No, 16,665 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 16665 can be evenly divided by 1 3 5 11 15 33 55 101 165 303 505 1,111 1,515 3,333 5,555 and 16,665, with no remainder.
Since 16,665 cannot be divided by just 1 and 16,665, it is not a prime number.