BB(5) = 47,176,870 We are extremely happy to announce that, after two years of intense collaboration, the goal of the Busy Beaver Challenge has been reached: the conjecture “BB(5) = 47,176,870” is proved. Exceeding our expectations, the proof has been formally written in Coq by collaborator mxdys whose work improves on and/or uses the contributions of more than 10 other bbchallenge contributors (see credits). The formal theorem’s statement was reviewed by independent Coq experts (see cr...
