Q: Is 1,377,243 a Prime Number?
A: No, 1,377,243 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 1377243 can be evenly divided by 1 3 7 9 21 27 49 63 81 147 189 347 441 567 1,041 1,323 2,429 3,123 3,969 7,287 9,369 17,003 21,861 28,107 51,009 65,583 153,027 196,749 459,081 and 1,377,243, with no remainder.
Since 1,377,243 cannot be divided by just 1 and 1,377,243, it is not a prime number.