Q: Is 100,491 a Prime Number?
A: No, 100,491 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 100491 can be evenly divided by 1 3 19 41 43 57 123 129 779 817 1,763 2,337 2,451 5,289 33,497 and 100,491, with no remainder.
Since 100,491 cannot be divided by just 1 and 100,491, it is not a prime number.