A lottery in the Philippines that resulted in 433 people winning a large amount of money has caused a lot of attention.
Local media reported that it was the highest number of people to ever win the top prize.
The winning combination of numbers was all nine-digits-in-number
Pimentel wants an inquiry into the results.
The odds of a large group of winners were 1 followed by 1,224 zeros, according to one expert.
Since it's so large, I don't know what to call it. The number of atoms in the universe has 80 zeros, according to a mathematics professor.
Six numbers from 1 to 55 are selected by participants. All six of a player's numbers need to be drawn by the lottery's operator in order to win the big prize.
The games are authorized by the Philippines. Mr Pimentel called for an investigation into the lottery's unusual outcome.
Melquiades Robles, general manager of the Philippine Charity Sweepstakes Office, said that people in the Philippines tend to bet on numbers.
Many people have kept their numbers. Mr Robles said it was good to be loyal to your wives and husbands.
Photographs and videos of people collecting their prize money were shared by the PCSO.
One winner said, "I've been betting on pattern 9 for many years and I'm thankful I just won."
According to a professor from the University of California, Los Angeles, a pattern like this is rare.
Every few decades, one of the hundreds of lotteries around the world would have an unusual pattern.
If you look at hundreds of thousands of hands at the same time, it becomes quite likely that a straight flush would be drawn.