Q: Is 1,335,243 a Prime Number?
A: No, 1,335,243 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 1335243 can be evenly divided by 1 3 7 13 21 39 67 73 91 201 219 273 469 511 871 949 1,407 1,533 2,613 2,847 4,891 6,097 6,643 14,673 18,291 19,929 34,237 63,583 102,711 190,749 445,081 and 1,335,243, with no remainder.
Since 1,335,243 cannot be divided by just 1 and 1,335,243, it is not a prime number.