Q: Is 138,878 a Prime Number?
A: No, 138,878 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 138878 can be evenly divided by 1 2 69,439 and 138,878, with no remainder.
Since 138,878 cannot be divided by just 1 and 138,878, it is not a prime number.