Q: Is 505,388 a Prime Number?
A: No, 505,388 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 505388 can be evenly divided by 1 2 4 13 26 52 9,719 19,438 38,876 126,347 252,694 and 505,388, with no remainder.
Since 505,388 cannot be divided by just 1 and 505,388, it is not a prime number.