Q: Is 20,871 a Prime Number?
A: No, 20,871 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 20871 can be evenly divided by 1 3 9 27 773 2,319 6,957 and 20,871, with no remainder.
Since 20,871 cannot be divided by just 1 and 20,871, it is not a prime number.