Q: Is 509,951 a Prime Number?
A: No, 509,951 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 509951 can be evenly divided by 1 13 39,227 and 509,951, with no remainder.
Since 509,951 cannot be divided by just 1 and 509,951, it is not a prime number.