Q: Is 428,108 a Prime Number?
A: No, 428,108 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 428108 can be evenly divided by 1 2 4 19 38 43 76 86 131 172 262 524 817 1,634 2,489 3,268 4,978 5,633 9,956 11,266 22,532 107,027 214,054 and 428,108, with no remainder.
Since 428,108 cannot be divided by just 1 and 428,108, it is not a prime number.