Q: Is 438,123 a Prime Number?
A: No, 438,123 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 438123 can be evenly divided by 1 3 7 21 31 93 217 651 673 2,019 4,711 14,133 20,863 62,589 146,041 and 438,123, with no remainder.
Since 438,123 cannot be divided by just 1 and 438,123, it is not a prime number.