Q: Is 1,000,278 a Prime Number?
A: No, 1,000,278 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 1000278 can be evenly divided by 1 2 3 6 9 18 61 122 183 366 549 911 1,098 1,822 2,733 5,466 8,199 16,398 55,571 111,142 166,713 333,426 500,139 and 1,000,278, with no remainder.
Since 1,000,278 cannot be divided by just 1 and 1,000,278, it is not a prime number.