Q: Is 138,558 a Prime Number?
A: No, 138,558 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 138558 can be evenly divided by 1 2 3 6 7 14 21 42 3,299 6,598 9,897 19,794 23,093 46,186 69,279 and 138,558, with no remainder.
Since 138,558 cannot be divided by just 1 and 138,558, it is not a prime number.