Q: Is 19,971 a Prime Number?
A: No, 19,971 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 19971 can be evenly divided by 1 3 7 9 21 63 317 951 2,219 2,853 6,657 and 19,971, with no remainder.
Since 19,971 cannot be divided by just 1 and 19,971, it is not a prime number.