Q: Is 320,605 a Prime Number?
A: No, 320,605 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 320605 can be evenly divided by 1 5 37 185 1,733 8,665 64,121 and 320,605, with no remainder.
Since 320,605 cannot be divided by just 1 and 320,605, it is not a prime number.