Q: Is 721,284 a Prime Number?
A: No, 721,284 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 721284 can be evenly divided by 1 2 3 4 6 12 60,107 120,214 180,321 240,428 360,642 and 721,284, with no remainder.
Since 721,284 cannot be divided by just 1 and 721,284, it is not a prime number.