Q: Is 629,991 a Prime Number?
A: No, 629,991 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 629991 can be evenly divided by 1 3 9 27 23,333 69,999 209,997 and 629,991, with no remainder.
Since 629,991 cannot be divided by just 1 and 629,991, it is not a prime number.