Q: Is 771,728 a Prime Number?
A: No, 771,728 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 771728 can be evenly divided by 1 2 4 8 16 139 278 347 556 694 1,112 1,388 2,224 2,776 5,552 48,233 96,466 192,932 385,864 and 771,728, with no remainder.
Since 771,728 cannot be divided by just 1 and 771,728, it is not a prime number.