Q: Is 242,505 a Prime Number?
A: No, 242,505 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 242505 can be evenly divided by 1 3 5 9 15 17 45 51 85 153 255 317 765 951 1,585 2,853 4,755 5,389 14,265 16,167 26,945 48,501 80,835 and 242,505, with no remainder.
Since 242,505 cannot be divided by just 1 and 242,505, it is not a prime number.