Q: Is 563,503 a Prime Number?
A: Yes, 563,503 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 563503 can be evenly divided by 1 and 563,503, with no remainder.
Since 563,503 can be divided by just 1 and 563,503, it is a prime number.