Q: Is 42,603 a Prime Number?
A: No, 42,603 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 42603 can be evenly divided by 1 3 11 33 1,291 3,873 14,201 and 42,603, with no remainder.
Since 42,603 cannot be divided by just 1 and 42,603, it is not a prime number.