Q: Is 1,098,378 a Prime Number?
A: No, 1,098,378 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 1098378 can be evenly divided by 1 2 3 6 9 18 139 278 417 439 834 878 1,251 1,317 2,502 2,634 3,951 7,902 61,021 122,042 183,063 366,126 549,189 and 1,098,378, with no remainder.
Since 1,098,378 cannot be divided by just 1 and 1,098,378, it is not a prime number.