Q: Is 1,243,138 a Prime Number?
A: No, 1,243,138 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 1243138 can be evenly divided by 1 2 13 26 137 274 349 698 1,781 3,562 4,537 9,074 47,813 95,626 621,569 and 1,243,138, with no remainder.
Since 1,243,138 cannot be divided by just 1 and 1,243,138, it is not a prime number.