Q: Is 165,251 a Prime Number?
A: No, 165,251 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 165251 can be evenly divided by 1 257 643 and 165,251, with no remainder.
Since 165,251 cannot be divided by just 1 and 165,251, it is not a prime number.