Q: Is 3,221,421 a Prime Number?
A: No, 3,221,421 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 3221421 can be evenly divided by 1 3 7 21 131 393 917 1,171 2,751 3,513 8,197 24,591 153,401 460,203 1,073,807 and 3,221,421, with no remainder.
Since 3,221,421 cannot be divided by just 1 and 3,221,421, it is not a prime number.