Q: Is 856,999 a Prime Number?
A: No, 856,999 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 856999 can be evenly divided by 1 11 13 143 169 461 1,859 5,071 5,993 65,923 77,909 and 856,999, with no remainder.
Since 856,999 cannot be divided by just 1 and 856,999, it is not a prime number.