Q: Is 640,013 a Prime Number?
A: No, 640,013 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 640013 can be evenly divided by 1 11 83 701 913 7,711 58,183 and 640,013, with no remainder.
Since 640,013 cannot be divided by just 1 and 640,013, it is not a prime number.