Q: Is 491,604 a Prime Number?
A: No, 491,604 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 491604 can be evenly divided by 1 2 3 4 6 12 71 142 213 284 426 577 852 1,154 1,731 2,308 3,462 6,924 40,967 81,934 122,901 163,868 245,802 and 491,604, with no remainder.
Since 491,604 cannot be divided by just 1 and 491,604, it is not a prime number.