Q: Is 328,491 a Prime Number?
A: No, 328,491 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 328491 can be evenly divided by 1 3 9 17 19 51 57 113 153 171 323 339 969 1,017 1,921 2,147 2,907 5,763 6,441 17,289 19,323 36,499 109,497 and 328,491, with no remainder.
Since 328,491 cannot be divided by just 1 and 328,491, it is not a prime number.