Q: Is 138,638 a Prime Number?
A: No, 138,638 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 138638 can be evenly divided by 1 2 103 206 673 1,346 69,319 and 138,638, with no remainder.
Since 138,638 cannot be divided by just 1 and 138,638, it is not a prime number.