Q: Is 661,243 a Prime Number?
A: No, 661,243 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 661243 can be evenly divided by 1 11 47 517 1,279 14,069 60,113 and 661,243, with no remainder.
Since 661,243 cannot be divided by just 1 and 661,243, it is not a prime number.