Q: Is 871,859 a Prime Number?
A: No, 871,859 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 871859 can be evenly divided by 1 661 1,319 and 871,859, with no remainder.
Since 871,859 cannot be divided by just 1 and 871,859, it is not a prime number.