A prime number is a number that is only divisible by one and itself, which is essentially saying that it has no divisor. That takes half of all possible numbers off the table right away (the evens), along with all multiples of three, four, five, and so on.

The winning numbers in Wednesday's drawing of the "Illinois Lucky Day Lotto (Midday)" game were: (eleven, twelve, eightteen, thirty-five, thirty-nine)