Q: Is 1,231,263 a Prime Number?
A: No, 1,231,263 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 1231263 can be evenly divided by 1 3 9 11 33 99 12,437 37,311 111,933 136,807 410,421 and 1,231,263, with no remainder.
Since 1,231,263 cannot be divided by just 1 and 1,231,263, it is not a prime number.