The seven Millennium Prize Problems represent some of the hardest unsolved questions in mathematics, including one famously solved by Grigory Perelman, who refused the million-dollar reward.

The Millennium Prize Problems were created by Landon T. Clay, an American businessman who founded the Clay Mathematics Institute (CMI) in Cambridge, Massachusetts, in 1998 to promote and share ...

Bakuage Co., Ltd. headquartered in Shibuya, Tokyo, announced on July 7, 2021, that it is offering a prize of 120 million Japanese yen (*) to anyone who has revealed the truth of the Collatz conjecture ...