Q: Is 155,143 a Prime Number?
A: No, 155,143 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 155143 can be evenly divided by 1 167 929 and 155,143, with no remainder.
Since 155,143 cannot be divided by just 1 and 155,143, it is not a prime number.