Q: Is 7,028,721 a Prime Number?
A: No, 7,028,721 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 7028721 can be evenly divided by 1 3 7 9 21 27 63 189 37,189 111,567 260,323 334,701 780,969 1,004,103 2,342,907 and 7,028,721, with no remainder.
Since 7,028,721 cannot be divided by just 1 and 7,028,721, it is not a prime number.