Q: Is 66,003 a Prime Number?
A: No, 66,003 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 66003 can be evenly divided by 1 3 7 21 49 147 449 1,347 3,143 9,429 22,001 and 66,003, with no remainder.
Since 66,003 cannot be divided by just 1 and 66,003, it is not a prime number.