Q: Is 823,563 a Prime Number?
A: No, 823,563 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 823563 can be evenly divided by 1 3 9 13 39 117 7,039 21,117 63,351 91,507 274,521 and 823,563, with no remainder.
Since 823,563 cannot be divided by just 1 and 823,563, it is not a prime number.