Q: Is 1,500,603 a Prime Number?
A: No, 1,500,603 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 1500603 can be evenly divided by 1 3 13 39 109 327 353 1,059 1,417 4,251 4,589 13,767 38,477 115,431 500,201 and 1,500,603, with no remainder.
Since 1,500,603 cannot be divided by just 1 and 1,500,603, it is not a prime number.