Q: Is 6,428,821 a Prime Number?
A: No, 6,428,821 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 6428821 can be evenly divided by 1 7 19 133 48,337 338,359 918,403 and 6,428,821, with no remainder.
Since 6,428,821 cannot be divided by just 1 and 6,428,821, it is not a prime number.