Q: Is 138,915 a Prime Number?
A: No, 138,915 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 138915 can be evenly divided by 1 3 5 7 9 15 21 27 35 45 49 63 81 105 135 147 189 245 315 343 405 441 567 735 945 1,029 1,323 1,715 2,205 2,835 3,087 3,969 5,145 6,615 9,261 15,435 19,845 27,783 46,305 and 138,915, with no remainder.
Since 138,915 cannot be divided by just 1 and 138,915, it is not a prime number.