Q: Is 1,991,513 a Prime Number?
A: No, 1,991,513 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 1991513 can be evenly divided by 1 73 27,281 and 1,991,513, with no remainder.
Since 1,991,513 cannot be divided by just 1 and 1,991,513, it is not a prime number.