Q: Is 243,407 a Prime Number?
A: No, 243,407 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 243407 can be evenly divided by 1 401 607 and 243,407, with no remainder.
Since 243,407 cannot be divided by just 1 and 243,407, it is not a prime number.