Q: Is 3,120,628 a Prime Number?
A: No, 3,120,628 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 3120628 can be evenly divided by 1 2 4 7 14 28 59 118 236 413 826 1,652 1,889 3,778 7,556 13,223 26,446 52,892 111,451 222,902 445,804 780,157 1,560,314 and 3,120,628, with no remainder.
Since 3,120,628 cannot be divided by just 1 and 3,120,628, it is not a prime number.