The winning numbers for Mega Millions are in. 

59-46-28-11-31 and a Megaball of 1.

The Mega Millions jackpot grew about $20 million due to an increase in recent ticket sales. 

The estimated $521 million jackpot is the fourth largest jackpot prize in Mega Millions history and the tenth largest jackpot in U.S. lottery history. 

The drawing on Friday is at 8 p.m. PST. 

If nobody wins the jackpot on Friday, it will grow to an estimated $612 million for Tuesday's drawing.

Winners are asked to sign the back of their tickets in ink and keep them in a safe place.