Q: Is 243,406 a Prime Number?
A: No, 243,406 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 243406 can be evenly divided by 1 2 17 34 7,159 14,318 121,703 and 243,406, with no remainder.
Since 243,406 cannot be divided by just 1 and 243,406, it is not a prime number.