Q: Is 31,143 a Prime Number?
A: No, 31,143 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 31143 can be evenly divided by 1 3 7 21 1,483 4,449 10,381 and 31,143, with no remainder.
Since 31,143 cannot be divided by just 1 and 31,143, it is not a prime number.