Q: Is 3,878 a Prime Number?
A: No, 3,878 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 3878 can be evenly divided by 1 2 7 14 277 554 1,939 and 3,878, with no remainder.
Since 3,878 cannot be divided by just 1 and 3,878, it is not a prime number.