Q: Is 145,809 a Prime Number?
A: No, 145,809 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 145809 can be evenly divided by 1 3 9 17 51 153 953 2,859 8,577 16,201 48,603 and 145,809, with no remainder.
Since 145,809 cannot be divided by just 1 and 145,809, it is not a prime number.