Q: Is 261,871 a Prime Number?
A: No, 261,871 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 261871 can be evenly divided by 1 307 853 and 261,871, with no remainder.
Since 261,871 cannot be divided by just 1 and 261,871, it is not a prime number.