Something similar happened in the UK lottery some years ago. All the numbers were below 31, which meant lots of people playing their/family birthdays as their numbers won. I think the jackpot was about £15 million, split more than a thousand ways. Still a tidy sum, but you'd still be a bittersweet I'd have thought.
That'll never happen to me. My numbers are spread out. I use the same ones every time, because a choir of singing and dancing monks with a fondness for ABBA tunes told me to play them in a dream. THAT'S the way to pick numbers, fools.