Q: Is 378,691 a Prime Number?
A: Yes, 378,691 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 378691 can be evenly divided by 1 and 378,691, with no remainder.
Since 378,691 can be divided by just 1 and 378,691, it is a prime number.