Q: Is 1,138,508 a Prime Number?
A: No, 1,138,508 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 1138508 can be evenly divided by 1 2 4 7 14 28 73 146 292 511 557 1,022 1,114 2,044 2,228 3,899 7,798 15,596 40,661 81,322 162,644 284,627 569,254 and 1,138,508, with no remainder.
Since 1,138,508 cannot be divided by just 1 and 1,138,508, it is not a prime number.