Q: Is 243,381 a Prime Number?
A: No, 243,381 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 243381 can be evenly divided by 1 3 31 93 2,617 7,851 81,127 and 243,381, with no remainder.
Since 243,381 cannot be divided by just 1 and 243,381, it is not a prime number.