Q: Is 401,721 a Prime Number?
A: No, 401,721 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 401721 can be evenly divided by 1 3 359 373 1,077 1,119 133,907 and 401,721, with no remainder.
Since 401,721 cannot be divided by just 1 and 401,721, it is not a prime number.