Q: Is 1,378,788 a Prime Number?
A: No, 1,378,788 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 1378788 can be evenly divided by 1 2 3 4 6 12 89 178 267 356 534 1,068 1,291 2,582 3,873 5,164 7,746 15,492 114,899 229,798 344,697 459,596 689,394 and 1,378,788, with no remainder.
Since 1,378,788 cannot be divided by just 1 and 1,378,788, it is not a prime number.