Q: Is 136,503 a Prime Number?
A: No, 136,503 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 136503 can be evenly divided by 1 3 9 29 87 261 523 1,569 4,707 15,167 45,501 and 136,503, with no remainder.
Since 136,503 cannot be divided by just 1 and 136,503, it is not a prime number.