Q: Is 665,003 a Prime Number?
A: No, 665,003 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 665003 can be evenly divided by 1 47 14,149 and 665,003, with no remainder.
Since 665,003 cannot be divided by just 1 and 665,003, it is not a prime number.