Q: Is 243,139 a Prime Number?
A: No, 243,139 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 243139 can be evenly divided by 1 13 59 317 767 4,121 18,703 and 243,139, with no remainder.
Since 243,139 cannot be divided by just 1 and 243,139, it is not a prime number.