Q: Is 311,493 a Prime Number?
A: No, 311,493 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 311493 can be evenly divided by 1 3 7 13 21 39 49 91 147 163 273 489 637 1,141 1,911 2,119 3,423 6,357 7,987 14,833 23,961 44,499 103,831 and 311,493, with no remainder.
Since 311,493 cannot be divided by just 1 and 311,493, it is not a prime number.