Q: Is 19,791 a Prime Number?
A: No, 19,791 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 19791 can be evenly divided by 1 3 9 27 733 2,199 6,597 and 19,791, with no remainder.
Since 19,791 cannot be divided by just 1 and 19,791, it is not a prime number.