Q: Is 378,645 a Prime Number?
A: No, 378,645 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 378645 can be evenly divided by 1 3 5 15 25,243 75,729 126,215 and 378,645, with no remainder.
Since 378,645 cannot be divided by just 1 and 378,645, it is not a prime number.