Q: Is 151,321 a Prime Number?
A: No, 151,321 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 151321 can be evenly divided by 1 389 and 151,321, with no remainder.
Since 151,321 cannot be divided by just 1 and 151,321, it is not a prime number.