Q: Is 821,268 a Prime Number?
A: No, 821,268 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 821268 can be evenly divided by 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 3,259 6,518 9,777 13,036 19,554 22,813 29,331 39,108 45,626 58,662 68,439 91,252 117,324 136,878 205,317 273,756 410,634 and 821,268, with no remainder.
Since 821,268 cannot be divided by just 1 and 821,268, it is not a prime number.