Q: Is 505,161 a Prime Number?
A: No, 505,161 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 505161 can be evenly divided by 1 3 9 37 41 111 123 333 369 1,369 1,517 4,107 4,551 12,321 13,653 56,129 168,387 and 505,161, with no remainder.
Since 505,161 cannot be divided by just 1 and 505,161, it is not a prime number.