Q: Is 378,243 a Prime Number?
A: No, 378,243 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 378243 can be evenly divided by 1 3 9 27 14,009 42,027 126,081 and 378,243, with no remainder.
Since 378,243 cannot be divided by just 1 and 378,243, it is not a prime number.