Q: Is 423,105 a Prime Number?
A: No, 423,105 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 423105 can be evenly divided by 1 3 5 15 67 201 335 421 1,005 1,263 2,105 6,315 28,207 84,621 141,035 and 423,105, with no remainder.
Since 423,105 cannot be divided by just 1 and 423,105, it is not a prime number.