Q: Is 509,281 a Prime Number?
A: Yes, 509,281 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 509281 can be evenly divided by 1 and 509,281, with no remainder.
Since 509,281 can be divided by just 1 and 509,281, it is a prime number.