Q: Is 279,993 a Prime Number?
A: No, 279,993 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 279993 can be evenly divided by 1 3 7 21 67 199 201 469 597 1,393 1,407 4,179 13,333 39,999 93,331 and 279,993, with no remainder.
Since 279,993 cannot be divided by just 1 and 279,993, it is not a prime number.