Q: Is 505,438 a Prime Number?
A: No, 505,438 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 505438 can be evenly divided by 1 2 19 38 47 94 283 566 893 1,786 5,377 10,754 13,301 26,602 252,719 and 505,438, with no remainder.
Since 505,438 cannot be divided by just 1 and 505,438, it is not a prime number.