Q: Is 155,863 a Prime Number?
A: Yes, 155,863 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 155863 can be evenly divided by 1 and 155,863, with no remainder.
Since 155,863 can be divided by just 1 and 155,863, it is a prime number.