Feeling lucky? Mega Millions drawings are at 11 pm ET Tuesdays and Fridays, including holidays. Friday the 13th is the next “holiday” lottery drawing.

Aided by his wife's words of encouragement, active-duty U.S. Army member Christopher Lehman signed up to play the lottery. That same day he became a millionaire.

There have been three Mega Millions winners this year, with the most recent being the April 18 win in Ohio of a $112 million ...