Q: Is 1,205,109 a Prime Number?
A: No, 1,205,109 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 1205109 can be evenly divided by 1 3 9 293 457 879 1,371 2,637 4,113 133,901 401,703 and 1,205,109, with no remainder.
Since 1,205,109 cannot be divided by just 1 and 1,205,109, it is not a prime number.