Q: Is 145,605 a Prime Number?
A: No, 145,605 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 145605 can be evenly divided by 1 3 5 15 17 51 85 255 571 1,713 2,855 8,565 9,707 29,121 48,535 and 145,605, with no remainder.
Since 145,605 cannot be divided by just 1 and 145,605, it is not a prime number.