Q: Is 626,991 a Prime Number?
A: No, 626,991 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 626991 can be evenly divided by 1 3 208,997 and 626,991, with no remainder.
Since 626,991 cannot be divided by just 1 and 626,991, it is not a prime number.