Q: Is 871,221 a Prime Number?
A: No, 871,221 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 871221 can be evenly divided by 1 3 13 39 89 251 267 753 1,157 3,263 3,471 9,789 22,339 67,017 290,407 and 871,221, with no remainder.
Since 871,221 cannot be divided by just 1 and 871,221, it is not a prime number.