Q: Is 16,401 a Prime Number?
A: No, 16,401 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 16401 can be evenly divided by 1 3 7 11 21 33 71 77 213 231 497 781 1,491 2,343 5,467 and 16,401, with no remainder.
Since 16,401 cannot be divided by just 1 and 16,401, it is not a prime number.