A book without any words but all numbers.
Japanese publishing house Nanairosha's recent offering is a strange book that has become surprisingly popular.
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The book, "The Biggest Prime Number in 2017", contains just one thing -- a newly discovered prime number that has broken the record for the largest ever found, coming in at a whopping 23,249,425 digits that covers the 791 pages in the book.
The number, the 50th prime number of its type to be discovered, is 2 to the power of 77,232,917 minus 1.
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In just four days, some 1,500 copies of the book were sold and it is currently out of stock at Amazon.
As numbers get larger, prime numbers, which are divisible only by 1 and themselves, become difficult to find. They become further apart, and there's no pattern to their distribution.
Even the formula for finding the Mersenne prime numbers -- named after the 17th-century French monk who studied them, Marin Mersenne -- isn't a surefire method, it's simply a way to narrow down a likelier place to find them.
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2 to the power of 77,232,917 minus 1 is the largest Mersenne prime number discovered so far, obtained by multiplying 2 to the power of 77,232,917, and then subtracting 1.
It was discovered late last year by Jonathan Pace, an American electrical engineer, through a software called the Great Internet Mersenne Prime Search, a collaborative project of volunteers to search for such figures.
Looking for a Mersenne prime is very difficult, just like searching for a needle in a haystack, said Jordan Ellenberg, a mathematics professor at the University of Wisconsin-Madison.
It has made great contributions in the fields of computer science and mathematics. And because of the difficulties in finding them, the Mersenne primes appear mysterious and romantic.
MISSISSAUGA, Ontario (AP) — Donald Trump cast a long shadow over Canada's national election — and many Canadian voters noticed.
In his first 100 days back in the White House, the U.S. president has lobbed barbs at America's northern neighbor, levied tariffs on Canadian goods and talked about making Canada the 51st state.
It had many Canadian voters thinking about Trump and how the parties on the ballot would respond to him. Prime Minister Mark Carney's Liberals won over Conservative opposition leader Pierre Poilievre, a dramatic reversal of fortune credited largely to Trump.
Here are some voices from voters casting their ballots in Monday's elections:
In Toronto, Reid Warren said he voted Liberal because he saw the party as the best amid what he characterized as “real uncertainty” in the economy particularly.
“I don’t think there is a better choice right now,” he said, voting in Toronto. "I know people believe in Poilievre but it’s the same, like, soundbites that you get from anybody else. It sounds like mini-Trump to me.”
Warren, who works at a wholesale food distribution center, said he did feel somewhat boosted by unity among Canadians created by “all the shade being thrown from the States,” but ‘it's definitely created some turmoil, that’s for sure."
“There’s only so many times that you can hear, you know, ’51st state’ and ‘governor this’ and all that disrespect that’s coming that you have to think, you know, at some point you have to take it seriously," said Duncan Garrow, a resident of Toronto.
"In a very bizarre, upside down, twisted way, this might be a good thing for Canada, because I think maybe we’ve had too much of a relationship with the United States. I mean, they’re right there, they’re always going to be our neighbor, our partner, our friend, hopefully. But thinking about other possibilities, thinking about cutting down some of our own barriers within Canada, but also thinking more internationally, just as a country, I think that’s a very healthy, progressive way to be going forward.”
Sisters Laiqa and Mahira Shoaib said they both voted for change in Monday’s election, and both said Trump's rhetoric and tariff plans influenced their decision.
The sisters, who immigrated from Pakistan a decade ago and voted in Mississauga, Ontario, said the economy has worsened and job opportunities have dried up under Liberal rule.
“It was different when we arrived,” Laiqa Shoaib said after casting her ballot. “We need to get out of Liberals.”
Laiqa, 27 and a health care worker, voted for the New Democratic Party. Mahira, 25, who works at a bank, supported the Conservative Party, and Poilievre, whom she described as “business-minded.”
“We would definitely be the 51st state if Mark Carney wins,” she said.
Kinnard reported from Chapin, South Carolina. She can be reached at http://x.com/MegKinnardAP
Liberal Party's supporters cheer on results at the party election night headquarters in Ottawa, Monday, April 28, 2025. (Nathan Denette/The Canadian Press via AP)
