Q: Is 1,331,421 a Prime Number?
A: No, 1,331,421 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 1331421 can be evenly divided by 1 3 7 13 21 39 91 273 4,877 14,631 34,139 63,401 102,417 190,203 443,807 and 1,331,421, with no remainder.
Since 1,331,421 cannot be divided by just 1 and 1,331,421, it is not a prime number.