Q: Is 5,555,558 a Prime Number?
A: No, 5,555,558 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 5555558 can be evenly divided by 1 2 23 46 59 89 118 178 529 1,058 1,357 2,047 2,714 4,094 5,251 10,502 31,211 47,081 62,422 94,162 120,773 241,546 2,777,779 and 5,555,558, with no remainder.
Since 5,555,558 cannot be divided by just 1 and 5,555,558, it is not a prime number.