Q: Is 263,821 a Prime Number?
A: Yes, 263,821 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 263821 can be evenly divided by 1 and 263,821, with no remainder.
Since 263,821 can be divided by just 1 and 263,821, it is a prime number.