Q: Is 2,121,491 a Prime Number?
A: No, 2,121,491 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 2121491 can be evenly divided by 1 43 103 479 4,429 20,597 49,337 and 2,121,491, with no remainder.
Since 2,121,491 cannot be divided by just 1 and 2,121,491, it is not a prime number.