Q: Is 243,478 a Prime Number?
A: No, 243,478 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 243478 can be evenly divided by 1 2 23 46 67 79 134 158 1,541 1,817 3,082 3,634 5,293 10,586 121,739 and 243,478, with no remainder.
Since 243,478 cannot be divided by just 1 and 243,478, it is not a prime number.