Bakuage offers prize of 120 million JPY to whoever solves Collatz conjecture, math problem unsolved for 84 years

– Highest Prize for Any Unsolved Problem in Mathematics –
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 …