Q: Is 2,178 a Prime Number?
A: No, 2,178 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 2178 can be evenly divided by 1 2 3 6 9 11 18 22 33 66 99 121 198 242 363 726 1,089 and 2,178, with no remainder.
Since 2,178 cannot be divided by just 1 and 2,178, it is not a prime number.