Q: Is 378,945 a Prime Number?
A: No, 378,945 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 378945 can be evenly divided by 1 3 5 7 9 15 21 27 35 45 63 105 135 189 315 401 945 1,203 2,005 2,807 3,609 6,015 8,421 10,827 14,035 18,045 25,263 42,105 54,135 75,789 126,315 and 378,945, with no remainder.
Since 378,945 cannot be divided by just 1 and 378,945, it is not a prime number.