Q: Is 268,821 a Prime Number?
A: No, 268,821 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 268821 can be evenly divided by 1 3 7 9 17 21 51 63 119 153 251 357 753 1,071 1,757 2,259 4,267 5,271 12,801 15,813 29,869 38,403 89,607 and 268,821, with no remainder.
Since 268,821 cannot be divided by just 1 and 268,821, it is not a prime number.