Q: Is 666,779 a Prime Number?
A: No, 666,779 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 666779 can be evenly divided by 1 31 137 157 4,247 4,867 21,509 and 666,779, with no remainder.
Since 666,779 cannot be divided by just 1 and 666,779, it is not a prime number.