Q: Is 100,605 a Prime Number?
A: No, 100,605 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 100605 can be evenly divided by 1 3 5 15 19 57 95 285 353 1,059 1,765 5,295 6,707 20,121 33,535 and 100,605, with no remainder.
Since 100,605 cannot be divided by just 1 and 100,605, it is not a prime number.