Q: Is 1,399,743 a Prime Number?
A: No, 1,399,743 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 1399743 can be evenly divided by 1 3 9 29 31 87 93 173 261 279 519 899 1,557 2,697 5,017 5,363 8,091 15,051 16,089 45,153 48,267 155,527 466,581 and 1,399,743, with no remainder.
Since 1,399,743 cannot be divided by just 1 and 1,399,743, it is not a prime number.