Q: Is 16,443 a Prime Number?
A: No, 16,443 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 16443 can be evenly divided by 1 3 7 9 21 27 29 63 81 87 189 203 261 567 609 783 1,827 2,349 5,481 and 16,443, with no remainder.
Since 16,443 cannot be divided by just 1 and 16,443, it is not a prime number.